56009864 has 8 divisors (see below), whose sum is σ = 105018510. Its totient is φ = 28004928.

The previous prime is 56009861. The next prime is 56009867. The reversal of 56009864 is 46890065.

It is an interprime number because it is at equal distance from previous prime (56009861) and next prime (56009867).

It can be written as a sum of positive squares in only one way, i.e., 35307364 + 20702500 = 5942^2 + 4550^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (56009861) 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 as a sum of consecutive naturals, namely, 3500609 + ... + 3500624.

Almost surely, 2^56009864 is an apocalyptic number.

It is an amenable number.

56009864 is a deficient number, since it is larger than the sum of its proper divisors (49008646).

56009864 is a wasteful number, since it uses less digits than its factorization.

56009864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001239 (or 7001235 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 56009864 is about 7483.9738107505. The cubic root of 56009864 is about 382.6086985133.

The spelling of 56009864 in words is "fifty-six million, nine thousand, eight hundred sixty-four".