57561038 has 4 divisors (see below), whose sum is σ = 86341560. Its totient is φ = 28780518.

The previous prime is 57561037. The next prime is 57561043. The reversal of 57561038 is 83016575.

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

It is a junction number, because it is equal to n+sod(n) for n = 57560989 and 57561007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57561037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14390258 + ... + 14390261.

It is an arithmetic number, because the mean of its divisors is an integer number (21585390).

Almost surely, 2^57561038 is an apocalyptic number.

57561038 is a deficient number, since it is larger than the sum of its proper divisors (28780522).

57561038 is a wasteful number, since it uses less digits than its factorization.

57561038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28780521.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 57561038 is about 7586.8991030592. The cubic root of 57561038 is about 386.1086568924.

The spelling of 57561038 in words is "fifty-seven million, five hundred sixty-one thousand, thirty-eight".