56642273 has 4 divisors (see below), whose sum is σ = 56657328. Its totient is φ = 56627220.

The previous prime is 56642263. The next prime is 56642281. The reversal of 56642273 is 37224665.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 56642273 - 2²⁰ = 55593697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56642203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3590 + ... + 11232.

It is an arithmetic number, because the mean of its divisors is an integer number (14164332).

Almost surely, 2^56642273 is an apocalyptic number.

It is an amenable number.

56642273 is a deficient number, since it is larger than the sum of its proper divisors (15055).

56642273 is an equidigital number, since it uses as much as digits as its factorization.

56642273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15054.

The product of its digits is 60480, while the sum is 35.

The square root of 56642273 is about 7526.1060981094. The cubic root of 56642273 is about 384.0433278114.

The spelling of 56642273 in words is "fifty-six million, six hundred forty-two thousand, two hundred seventy-three".