56387873 has 4 divisors (see below), whose sum is σ = 56832000. Its totient is φ = 55943748.

The previous prime is 56387869. The next prime is 56387887. The reversal of 56387873 is 37878365.

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 56387873 - 2² = 56387869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56387173) 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, 221873 + ... + 222126.

It is an arithmetic number, because the mean of its divisors is an integer number (14208000).

Almost surely, 2^56387873 is an apocalyptic number.

It is an amenable number.

56387873 is a deficient number, since it is larger than the sum of its proper divisors (444127).

56387873 is a wasteful number, since it uses less digits than its factorization.

56387873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444126.

The product of its digits is 846720, while the sum is 47.

The square root of 56387873 is about 7509.1859079397. The cubic root of 56387873 is about 383.4675078301.

The spelling of 56387873 in words is "fifty-six million, three hundred eighty-seven thousand, eight hundred seventy-three".