56161113 has 8 divisors (see below), whose sum is σ = 75544608. Its totient is φ = 37109184.

The previous prime is 56161087. The next prime is 56161121. The reversal of 56161113 is 31116165.

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

It is not a de Polignac number, because 56161113 - 2²⁰ = 55112537 is a prime.

It is a super-2 number, since 2×56161113² = 6308141226797538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56161123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82495 + ... + 83172.

It is an arithmetic number, because the mean of its divisors is an integer number (9443076).

Almost surely, 2^56161113 is an apocalyptic number.

It is an amenable number.

56161113 is a deficient number, since it is larger than the sum of its proper divisors (19383495).

56161113 is a wasteful number, since it uses less digits than its factorization.

56161113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165783.

The product of its digits is 540, while the sum is 24.

The square root of 56161113 is about 7494.0718571415. The cubic root of 56161113 is about 382.9527877323.

Adding to 56161113 its reverse (31116165), we get a palindrome (87277278).

The spelling of 56161113 in words is "fifty-six million, one hundred sixty-one thousand, one hundred thirteen".