56751523 has 4 divisors (see below), whose sum is σ = 56770648. Its totient is φ = 56732400.

The previous prime is 56751517. The next prime is 56751551. The reversal of 56751523 is 32515765.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56751523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56721523) 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, 4053 + ... + 11398.

It is an arithmetic number, because the mean of its divisors is an integer number (14192662).

Almost surely, 2^56751523 is an apocalyptic number.

56751523 is a deficient number, since it is larger than the sum of its proper divisors (19125).

56751523 is a wasteful number, since it uses less digits than its factorization.

56751523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19124.

The product of its digits is 31500, while the sum is 34.

The square root of 56751523 is about 7533.3606710418. The cubic root of 56751523 is about 384.2900798408.

The spelling of 56751523 in words is "fifty-six million, seven hundred fifty-one thousand, five hundred twenty-three".