56161151 has 4 divisors (see below), whose sum is σ = 56717304. Its totient is φ = 55605000.

The previous prime is 56161123. The next prime is 56161199. The reversal of 56161151 is 15116165.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56161151 - 2⁶ = 56161087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56161151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56161121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277925 + ... + 278126.

It is an arithmetic number, because the mean of its divisors is an integer number (14179326).

Almost surely, 2^56161151 is an apocalyptic number.

56161151 is a deficient number, since it is larger than the sum of its proper divisors (556153).

56161151 is a wasteful number, since it uses less digits than its factorization.

56161151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556152.

The product of its digits is 900, while the sum is 26.

The square root of 56161151 is about 7494.0743924784. The cubic root of 56161151 is about 382.9528741041.

The spelling of 56161151 in words is "fifty-six million, one hundred sixty-one thousand, one hundred fifty-one".