56744387 has 16 divisors (see below), whose sum is σ = 67603200. Its totient is φ = 46599840.

The previous prime is 56744383. The next prime is 56744417. The reversal of 56744387 is 78344765.

It is not a de Polignac number, because 56744387 - 2² = 56744383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56744383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27212 + ... + 29222.

It is an arithmetic number, because the mean of its divisors is an integer number (4225200).

Almost surely, 2^56744387 is an apocalyptic number.

56744387 is a deficient number, since it is larger than the sum of its proper divisors (10858813).

56744387 is a wasteful number, since it uses less digits than its factorization.

56744387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2186.

The product of its digits is 564480, while the sum is 44.

The square root of 56744387 is about 7532.8870295525. The cubic root of 56744387 is about 384.2739721442.

The spelling of 56744387 in words is "fifty-six million, seven hundred forty-four thousand, three hundred eighty-seven".