56461161 has 4 divisors (see below), whose sum is σ = 75281552. Its totient is φ = 37640772.

The previous prime is 56461157. The next prime is 56461169. The reversal of 56461161 is 16116465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56461161 - 2² = 56461157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56461169) 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, 9410191 + ... + 9410196.

It is an arithmetic number, because the mean of its divisors is an integer number (18820388).

Almost surely, 2^56461161 is an apocalyptic number.

It is an amenable number.

56461161 is a deficient number, since it is larger than the sum of its proper divisors (18820391).

56461161 is a wasteful number, since it uses less digits than its factorization.

56461161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18820390.

The product of its digits is 4320, while the sum is 30.

The square root of 56461161 is about 7514.0642131938. The cubic root of 56461161 is about 383.6335683587.

The spelling of 56461161 in words is "fifty-six million, four hundred sixty-one thousand, one hundred sixty-one".