56639506 has 16 divisors (see below), whose sum is σ = 105923520. Its totient is φ = 22067280.

The previous prime is 56639483. The next prime is 56639507. The reversal of 56639506 is 60593665.

It is not an unprimeable number, because it can be changed into a prime (56639507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183741 + ... + 184048.

It is an arithmetic number, because the mean of its divisors is an integer number (6620220).

Almost surely, 2^56639506 is an apocalyptic number.

56639506 is a deficient number, since it is larger than the sum of its proper divisors (49284014).

56639506 is a wasteful number, since it uses less digits than its factorization.

56639506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367809.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 56639506 is about 7525.9222690644. The cubic root of 56639506 is about 384.0370741476.

The spelling of 56639506 in words is "fifty-six million, six hundred thirty-nine thousand, five hundred six".