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57144895 = 516768437
BaseRepresentation
bin1101100111111…
…1011000111111
310222112021001121
43121333120333
5104112114040
65400451411
71262503123
oct331773077
9128467047
1057144895
112a290895
1217179b67
13baba562
147837583
15503bc4a
hex367f63f

57144895 has 8 divisors (see below), whose sum is σ = 68985504. Its totient is φ = 45441504.

The previous prime is 57144869. The next prime is 57144907. The reversal of 57144895 is 59844175.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57144895 - 27 = 57144767 is a prime.

It is a super-2 number, since 2×571448952 = 6531078049122050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33384 + ... + 35053.

It is an arithmetic number, because the mean of its divisors is an integer number (8623188).

Almost surely, 257144895 is an apocalyptic number.

57144895 is a deficient number, since it is larger than the sum of its proper divisors (11840609).

57144895 is a wasteful number, since it uses less digits than its factorization.

57144895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68609.

The product of its digits is 201600, while the sum is 43.

The square root of 57144895 is about 7559.4242505630. The cubic root of 57144895 is about 385.1759357809.

It can be divided in two parts, 5714 and 4895, that added together give a square (10609 = 1032).

The spelling of 57144895 in words is "fifty-seven million, one hundred forty-four thousand, eight hundred ninety-five".

Divisors: 1 5 167 835 68437 342185 11428979 57144895