56389515 has 64 divisors (see below), whose sum is σ = 112358400. Its totient is φ = 23514624.

The previous prime is 56389499. The next prime is 56389547. The reversal of 56389515 is 51598365.

It is not a de Polignac number, because 56389515 - 2⁴ = 56389499 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 148596 + ... + 148974.

It is an arithmetic number, because the mean of its divisors is an integer number (1755600).

Almost surely, 2^56389515 is an apocalyptic number.

56389515 is a deficient number, since it is larger than the sum of its proper divisors (55968885).

56389515 is a wasteful number, since it uses less digits than its factorization.

56389515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516.

The product of its digits is 162000, while the sum is 42.

The square root of 56389515 is about 7509.2952399010. The cubic root of 56389515 is about 383.4712299516.

The spelling of 56389515 in words is "fifty-six million, three hundred eighty-nine thousand, five hundred fifteen".