56523578 has 4 divisors (see below), whose sum is σ = 84785370. Its totient is φ = 28261788.

The previous prime is 56523569. The next prime is 56523583. The reversal of 56523578 is 87532565.

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

It can be written as a sum of positive squares in only one way, i.e., 37540129 + 18983449 = 6127^2 + 4357^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14130893 + ... + 14130896.

Almost surely, 2^56523578 is an apocalyptic number.

56523578 is a deficient number, since it is larger than the sum of its proper divisors (28261792).

56523578 is a wasteful number, since it uses less digits than its factorization.

56523578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28261791.

The product of its digits is 252000, while the sum is 41.

The square root of 56523578 is about 7518.2164108251. The cubic root of 56523578 is about 383.7748834250.

The spelling of 56523578 in words is "fifty-six million, five hundred twenty-three thousand, five hundred seventy-eight".