56557016 has 16 divisors (see below), whose sum is σ = 108911040. Its totient is φ = 27514080.

The previous prime is 56557013. The next prime is 56557021. The reversal of 56557016 is 61075565.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56557013) 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, 95240 + ... + 95831.

It is an arithmetic number, because the mean of its divisors is an integer number (6806940).

Almost surely, 2^56557016 is an apocalyptic number.

It is an amenable number.

56557016 is a deficient number, since it is larger than the sum of its proper divisors (52354024).

56557016 is a wasteful number, since it uses less digits than its factorization.

56557016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191114 (or 191110 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 56557016 is about 7520.4398807517. The cubic root of 56557016 is about 383.8505458615.

The spelling of 56557016 in words is "fifty-six million, five hundred fifty-seven thousand, sixteen".