56289015 has 12 divisors (see below), whose sum is σ = 97567704. Its totient is φ = 30020784.

The previous prime is 56289011. The next prime is 56289043. The reversal of 56289015 is 51098265.

It is a happy number.

56289015 is a `hidden beast` number, since 562 + 8 + 90 + 1 + 5 = 666.

It is not a de Polignac number, because 56289015 - 2² = 56289011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56289011) 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, 625389 + ... + 625478.

It is an arithmetic number, because the mean of its divisors is an integer number (8130642).

Almost surely, 2^56289015 is an apocalyptic number.

56289015 is a deficient number, since it is larger than the sum of its proper divisors (41278689).

56289015 is a wasteful number, since it uses less digits than its factorization.

56289015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250878 (or 1250875 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 56289015 is about 7502.6005491429. The cubic root of 56289015 is about 383.2432810941.

The spelling of 56289015 in words is "fifty-six million, two hundred eighty-nine thousand, fifteen".