56447385 has 64 divisors (see below), whose sum is σ = 100465920. Its totient is φ = 26956800.

The previous prime is 56447383. The next prime is 56447411. The reversal of 56447385 is 58374465.

It is not a de Polignac number, because 56447385 - 2¹ = 56447383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56447381) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 558835 + ... + 558935.

It is an arithmetic number, because the mean of its divisors is an integer number (1569780).

Almost surely, 2^56447385 is an apocalyptic number.

It is an amenable number.

56447385 is a deficient number, since it is larger than the sum of its proper divisors (44018535).

56447385 is a wasteful number, since it uses less digits than its factorization.

56447385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218.

The product of its digits is 403200, while the sum is 42.

The square root of 56447385 is about 7513.1474762579. The cubic root of 56447385 is about 383.6023648090.

The spelling of 56447385 in words is "fifty-six million, four hundred forty-seven thousand, three hundred eighty-five".