56292409 has 4 divisors (see below), whose sum is σ = 56314404. Its totient is φ = 56270416.

The previous prime is 56292407. The next prime is 56292427. The reversal of 56292409 is 90429265.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3686400 + 52606009 = 1920^2 + 7253^2 .

It is a cyclic number.

It is not a de Polignac number, because 56292409 - 2¹ = 56292407 is a prime.

It is a super-2 number, since 2×56292409² = 6337670622046562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56292407) 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, 6562 + ... + 12475.

It is an arithmetic number, because the mean of its divisors is an integer number (14078601).

Almost surely, 2^56292409 is an apocalyptic number.

It is an amenable number.

56292409 is a deficient number, since it is larger than the sum of its proper divisors (21995).

56292409 is a wasteful number, since it uses less digits than its factorization.

56292409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21994.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 56292409 is about 7502.8267339717. The cubic root of 56292409 is about 383.2509836127.

The spelling of 56292409 in words is "fifty-six million, two hundred ninety-two thousand, four hundred nine".