56351191 has 6 divisors (see below), whose sum is σ = 61019520. Its totient is φ = 52016328.

The previous prime is 56351177. The next prime is 56351201. The reversal of 56351191 is 19115365.

It is a de Polignac number, because none of the positive numbers 2^k-56351191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56351171) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166551 + ... + 166888.

It is an arithmetic number, because the mean of its divisors is an integer number (10169920).

Almost surely, 2^56351191 is an apocalyptic number.

56351191 is a deficient number, since it is larger than the sum of its proper divisors (4668329).

56351191 is a wasteful number, since it uses less digits than its factorization.

56351191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333465 (or 333452 counting only the distinct ones).

The product of its digits is 4050, while the sum is 31.

The square root of 56351191 is about 7506.7430354315. The cubic root of 56351191 is about 383.3843374268.

The spelling of 56351191 in words is "fifty-six million, three hundred fifty-one thousand, one hundred ninety-one".