56220899 has 4 divisors (see below), whose sum is σ = 64252464. Its totient is φ = 48189336.

The previous prime is 56220893. The next prime is 56220907. The reversal of 56220899 is 99802265.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99802265 = 5 ⋅19960453.

It is a cyclic number.

It is not a de Polignac number, because 56220899 - 2⁸ = 56220643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56220893) 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, 4015772 + ... + 4015785.

It is an arithmetic number, because the mean of its divisors is an integer number (16063116).

Almost surely, 2^56220899 is an apocalyptic number.

56220899 is a deficient number, since it is larger than the sum of its proper divisors (8031565).

56220899 is an equidigital number, since it uses as much as digits as its factorization.

56220899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8031564.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 56220899 is about 7498.0596823445. The cubic root of 56220899 is about 383.0886296261.

The spelling of 56220899 in words is "fifty-six million, two hundred twenty thousand, eight hundred ninety-nine".