56765181 has 8 divisors (see below), whose sum is σ = 82567584. Its totient is φ = 34403120.

The previous prime is 56765171. The next prime is 56765201. The reversal of 56765181 is 18156765.

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

It is a cyclic number.

It is not a de Polignac number, because 56765181 - 2⁷ = 56765053 is a prime.

It is a super-2 number, since 2×56765181² = 6444571547925522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56765161) 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, 860046 + ... + 860111.

It is an arithmetic number, because the mean of its divisors is an integer number (10320948).

Almost surely, 2^56765181 is an apocalyptic number.

It is an amenable number.

56765181 is a deficient number, since it is larger than the sum of its proper divisors (25802403).

56765181 is a wasteful number, since it uses less digits than its factorization.

56765181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720171.

The product of its digits is 50400, while the sum is 39.

The square root of 56765181 is about 7534.2671176432. The cubic root of 56765181 is about 384.3209055212.

The spelling of 56765181 in words is "fifty-six million, seven hundred sixty-five thousand, one hundred eighty-one".