56157790 has 16 divisors (see below), whose sum is σ = 108859968. Its totient is φ = 20735136.

The previous prime is 56157767. The next prime is 56157797. The reversal of 56157790 is 9775165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56157797) 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, 215862 + ... + 216121.

It is an arithmetic number, because the mean of its divisors is an integer number (6803748).

Almost surely, 2^56157790 is an apocalyptic number.

56157790 is a deficient number, since it is larger than the sum of its proper divisors (52702178).

56157790 is a wasteful number, since it uses less digits than its factorization.

56157790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432003.

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 56157790 is about 7493.8501452858. The cubic root of 56157790 is about 382.9452345984.

The spelling of 56157790 in words is "fifty-six million, one hundred fifty-seven thousand, seven hundred ninety".