56263809 has 12 divisors (see below), whose sum is σ = 87266544. Its totient is φ = 32150664.

The previous prime is 56263789. The next prime is 56263811. The reversal of 56263809 is 90836265.

It is not a de Polignac number, because 56263809 - 2¹¹ = 56261761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56263859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191227 + ... + 191520.

It is an arithmetic number, because the mean of its divisors is an integer number (7272212).

Almost surely, 2^56263809 is an apocalyptic number.

It is an amenable number.

56263809 is a deficient number, since it is larger than the sum of its proper divisors (31002735).

56263809 is a wasteful number, since it uses less digits than its factorization.

56263809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382764 (or 382757 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 56263809 is about 7500.9205435066. The cubic root of 56263809 is about 383.1860676075.

The spelling of 56263809 in words is "fifty-six million, two hundred sixty-three thousand, eight hundred nine".