56578829 has 4 divisors (see below), whose sum is σ = 56658240. Its totient is φ = 56499420.

The previous prime is 56578799. The next prime is 56578831. The reversal of 56578829 is 92887565.

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: 92887565 = 5 ⋅18577513.

It is a cyclic number.

It is not a de Polignac number, because 56578829 - 2⁸ = 56578573 is a prime.

It is a super-2 number, since 2×56578829² = 6402327782022482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56578849) 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, 38627 + ... + 40064.

It is an arithmetic number, because the mean of its divisors is an integer number (14164560).

Almost surely, 2^56578829 is an apocalyptic number.

It is an amenable number.

56578829 is a deficient number, since it is larger than the sum of its proper divisors (79411).

56578829 is an equidigital number, since it uses as much as digits as its factorization.

56578829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79410.

The product of its digits is 1209600, while the sum is 50.

The square root of 56578829 is about 7521.8899885601. The cubic root of 56578829 is about 383.8998875486.

The spelling of 56578829 in words is "fifty-six million, five hundred seventy-eight thousand, eight hundred twenty-nine".