56076409 has 4 divisors (see below), whose sum is σ = 56358400. Its totient is φ = 55794420.

The previous prime is 56076407. The next prime is 56076413. The reversal of 56076409 is 90467065.

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 not a de Polignac number, because 56076409 - 2¹ = 56076407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56076403) 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, 140697 + ... + 141094.

It is an arithmetic number, because the mean of its divisors is an integer number (14089600).

Almost surely, 2^56076409 is an apocalyptic number.

It is an amenable number.

56076409 is a deficient number, since it is larger than the sum of its proper divisors (281991).

56076409 is a wasteful number, since it uses less digits than its factorization.

56076409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281990.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 56076409 is about 7488.4183243192. The cubic root of 56076409 is about 382.7601636151.

The spelling of 56076409 in words is "fifty-six million, seventy-six thousand, four hundred nine".