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454238641 = 2297197753
BaseRepresentation
bin11011000100110…
…010000110110001
31011122201201021101
4123010302012301
51412241114031
6113023524401
714153651623
oct3304620661
91148651241
10454238641
1121345123a
12108159701
137315207c
1444482c13
1529d29361
hex1b1321b1

454238641 has 4 divisors (see below), whose sum is σ = 454438692. Its totient is φ = 454038592.

The previous prime is 454238633. The next prime is 454238663. The reversal of 454238641 is 146832454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146832454 = 273416227.

It can be written as a sum of positive squares in 2 ways, for example, as 200505600 + 253733041 = 14160^2 + 15929^2 .

It is a cyclic number.

It is not a de Polignac number, because 454238641 - 23 = 454238633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 454238641.

It is not an unprimeable number, because it can be changed into a prime (454238621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96580 + ... + 101173.

It is an arithmetic number, because the mean of its divisors is an integer number (113609673).

Almost surely, 2454238641 is an apocalyptic number.

It is an amenable number.

454238641 is a deficient number, since it is larger than the sum of its proper divisors (200051).

454238641 is a wasteful number, since it uses less digits than its factorization.

454238641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200050.

The product of its digits is 92160, while the sum is 37.

The square root of 454238641 is about 21312.8750054984. The cubic root of 454238641 is about 768.7079252888.

The spelling of 454238641 in words is "four hundred fifty-four million, two hundred thirty-eight thousand, six hundred forty-one".

Divisors: 1 2297 197753 454238641