56191051 has 8 divisors (see below), whose sum is σ = 64488960. Its totient is φ = 47960808.

The previous prime is 56191021. The next prime is 56191063. The reversal of 56191051 is 15019165.

56191051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56191051 - 2⁵ = 56191019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56191021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15121 + ... + 18466.

It is an arithmetic number, because the mean of its divisors is an integer number (8061120).

Almost surely, 2^56191051 is an apocalyptic number.

56191051 is a deficient number, since it is larger than the sum of its proper divisors (8297909).

56191051 is a wasteful number, since it uses less digits than its factorization.

56191051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33833.

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 56191051 is about 7496.0690365017. The cubic root of 56191051 is about 383.0208229697.

It can be divided in two parts, 5619 and 1051, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 56191051 in words is "fifty-six million, one hundred ninety-one thousand, fifty-one".