56196681 has 4 divisors (see below), whose sum is σ = 74928912. Its totient is φ = 37464452.

The previous prime is 56196671. The next prime is 56196709. The reversal of 56196681 is 18669165.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56196681 is a prime.

It is a super-2 number, since 2×56196681² = 6316133910831522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56196671) 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, 9366111 + ... + 9366116.

It is an arithmetic number, because the mean of its divisors is an integer number (18732228).

Almost surely, 2^56196681 is an apocalyptic number.

It is an amenable number.

56196681 is a deficient number, since it is larger than the sum of its proper divisors (18732231).

56196681 is a wasteful number, since it uses less digits than its factorization.

56196681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18732230.

The product of its digits is 77760, while the sum is 42.

The square root of 56196681 is about 7496.4445572551. Note that the first 3 decimals coincide. The cubic root of 56196681 is about 383.0336146579.

The spelling of 56196681 in words is "fifty-six million, one hundred ninety-six thousand, six hundred eighty-one".