56858621 has 4 divisors (see below), whose sum is σ = 59851200. Its totient is φ = 53866044.

The previous prime is 56858611. The next prime is 56858663. The reversal of 56858621 is 12685865.

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 56858621 - 2¹⁰ = 56857597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56858611) 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, 1496261 + ... + 1496298.

It is an arithmetic number, because the mean of its divisors is an integer number (14962800).

Almost surely, 2^56858621 is an apocalyptic number.

It is an amenable number.

56858621 is a deficient number, since it is larger than the sum of its proper divisors (2992579).

56858621 is a wasteful number, since it uses less digits than its factorization.

56858621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992578.

The product of its digits is 115200, while the sum is 41.

The square root of 56858621 is about 7540.4655691807. The cubic root of 56858621 is about 384.5316641746.

The spelling of 56858621 in words is "fifty-six million, eight hundred fifty-eight thousand, six hundred twenty-one".