57661038 has 16 divisors (see below), whose sum is σ = 128135760. Its totient is φ = 19220328.

The previous prime is 57661031. The next prime is 57661039. The reversal of 57661038 is 83016675.

57661038 is a `hidden beast` number, since 5 + 7 + 6 + 610 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 57660993 and 57661011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57661031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533845 + ... + 533952.

It is an arithmetic number, because the mean of its divisors is an integer number (8008485).

Almost surely, 2^57661038 is an apocalyptic number.

57661038 is an abundant number, since it is smaller than the sum of its proper divisors (70474722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57661038 is a wasteful number, since it uses less digits than its factorization.

57661038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067808 (or 1067802 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 57661038 is about 7593.4865509857. The cubic root of 57661038 is about 386.3321212889.

The spelling of 57661038 in words is "fifty-seven million, six hundred sixty-one thousand, thirty-eight".