56665026 has 36 divisors (see below), whose sum is σ = 134955366. Its totient is φ = 17170560.

The previous prime is 56664997. The next prime is 56665027. The reversal of 56665026 is 62056665.

It can be written as a sum of positive squares in only one way, i.e., 42263001 + 14402025 = 6501^2 + 3795^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56665027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10831 + ... + 15186.

Almost surely, 2^56665026 is an apocalyptic number.

56665026 is an abundant number, since it is smaller than the sum of its proper divisors (78290340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56665026 is a wasteful number, since it uses less digits than its factorization.

56665026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26047 (or 26033 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 56665026 is about 7527.6175513903. The cubic root of 56665026 is about 384.0947438746.

The spelling of 56665026 in words is "fifty-six million, six hundred sixty-five thousand, twenty-six".