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2045554405 = 5409110881
BaseRepresentation
bin111100111101100…
…1010111011100101
312021120001221010021
41321323022323211
513142130220110
6534551155141
7101455632316
oct17173127345
95246057107
102045554405
1195a731334
12491075ab1
13267a3712b
1415595660d
15be8b02da
hex79ecaee5

2045554405 has 4 divisors (see below), whose sum is σ = 2454665292. Its totient is φ = 1636443520.

The previous prime is 2045554403. The next prime is 2045554429. The reversal of 2045554405 is 5044555402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 404251236 + 1641303169 = 20106^2 + 40513^2 .

It is not a de Polignac number, because 2045554405 - 21 = 2045554403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045554403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204555436 + ... + 204555445.

It is an arithmetic number, because the mean of its divisors is an integer number (613666323).

Almost surely, 22045554405 is an apocalyptic number.

It is an amenable number.

2045554405 is a deficient number, since it is larger than the sum of its proper divisors (409110887).

2045554405 is an equidigital number, since it uses as much as digits as its factorization.

2045554405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409110886.

The product of its (nonzero) digits is 80000, while the sum is 34.

The square root of 2045554405 is about 45227.8056620040. The cubic root of 2045554405 is about 1269.4151532448.

The spelling of 2045554405 in words is "two billion, forty-five million, five hundred fifty-four thousand, four hundred five".

Divisors: 1 5 409110881 2045554405