56115851 has 4 divisors (see below), whose sum is σ = 61217304. Its totient is φ = 51014400.

The previous prime is 56115823. The next prime is 56115869. The reversal of 56115851 is 15851165.

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 56115851 - 2¹⁰ = 56114827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56115881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550710 + ... + 2550731.

It is an arithmetic number, because the mean of its divisors is an integer number (15304326).

Almost surely, 2^56115851 is an apocalyptic number.

56115851 is a deficient number, since it is larger than the sum of its proper divisors (5101453).

56115851 is a wasteful number, since it uses less digits than its factorization.

56115851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101452.

The product of its digits is 6000, while the sum is 32.

The square root of 56115851 is about 7491.0513948310. The cubic root of 56115851 is about 382.8498822004.

The spelling of 56115851 in words is "fifty-six million, one hundred fifteen thousand, eight hundred fifty-one".