56523739 has 8 divisors (see below), whose sum is σ = 57576960. Its totient is φ = 55477800.

The previous prime is 56523721. The next prime is 56523767. The reversal of 56523739 is 93732565.

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

It is a cyclic number.

It is not a de Polignac number, because 56523739 - 2¹⁷ = 56392667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56523799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15304 + ... + 18634.

It is an arithmetic number, because the mean of its divisors is an integer number (7197120).

Almost surely, 2^56523739 is an apocalyptic number.

56523739 is a deficient number, since it is larger than the sum of its proper divisors (1053221).

56523739 is a wasteful number, since it uses less digits than its factorization.

56523739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641.

The product of its digits is 170100, while the sum is 40.

The square root of 56523739 is about 7518.2271181443. The cubic root of 56523739 is about 383.7752478022.

The spelling of 56523739 in words is "fifty-six million, five hundred twenty-three thousand, seven hundred thirty-nine".