56981057 has 8 divisors (see below), whose sum is σ = 68548800. Its totient is φ = 46270224.

The previous prime is 56981053. The next prime is 56981117. The reversal of 56981057 is 75018965.

56981057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 56981057 - 2² = 56981053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56981053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214082 + ... + 214347.

It is an arithmetic number, because the mean of its divisors is an integer number (8568600).

Almost surely, 2^56981057 is an apocalyptic number.

It is an amenable number.

56981057 is a deficient number, since it is larger than the sum of its proper divisors (11567743).

56981057 is a wasteful number, since it uses less digits than its factorization.

56981057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428455.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 56981057 is about 7548.5798002008. The cubic root of 56981057 is about 384.8074755637.

The spelling of 56981057 in words is "fifty-six million, nine hundred eighty-one thousand, fifty-seven".