56176609 has 4 divisors (see below), whose sum is σ = 57371904. Its totient is φ = 54981316.

The previous prime is 56176607. The next prime is 56176621. The reversal of 56176609 is 90667165.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90667165 = 5 ⋅18133433.

It is a cyclic number.

It is not a de Polignac number, because 56176609 - 2¹ = 56176607 is a prime.

It is a super-2 number, since 2×56176609² = 6311622797477762, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56176607) 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, 597577 + ... + 597670.

It is an arithmetic number, because the mean of its divisors is an integer number (14342976).

Almost surely, 2^56176609 is an apocalyptic number.

It is an amenable number.

56176609 is a deficient number, since it is larger than the sum of its proper divisors (1195295).

56176609 is a wasteful number, since it uses less digits than its factorization.

56176609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195294.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 56176609 is about 7495.1056697021. The cubic root of 56176609 is about 382.9880059962.

The spelling of 56176609 in words is "fifty-six million, one hundred seventy-six thousand, six hundred nine".