56147511 has 32 divisors (see below), whose sum is σ = 88708608. Its totient is φ = 30925440.

The previous prime is 56147473. The next prime is 56147557. The reversal of 56147511 is 11574165.

It is a de Polignac number, because none of the positive numbers 2^k-56147511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56147411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67480 + ... + 68306.

It is an arithmetic number, because the mean of its divisors is an integer number (2772144).

Almost surely, 2^56147511 is an apocalyptic number.

56147511 is a deficient number, since it is larger than the sum of its proper divisors (32561097).

56147511 is a wasteful number, since it uses less digits than its factorization.

56147511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951.

The product of its digits is 4200, while the sum is 30.

The square root of 56147511 is about 7493.1642848666. The cubic root of 56147511 is about 382.9218686845.

The spelling of 56147511 in words is "fifty-six million, one hundred forty-seven thousand, five hundred eleven".