56621451 has 8 divisors (see below), whose sum is σ = 77336784. Its totient is φ = 36826880.

The previous prime is 56621447. The next prime is 56621471. The reversal of 56621451 is 15412665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56621451 - 2² = 56621447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56621401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230046 + ... + 230291.

It is an arithmetic number, because the mean of its divisors is an integer number (9667098).

Almost surely, 2^56621451 is an apocalyptic number.

56621451 is a deficient number, since it is larger than the sum of its proper divisors (20715333).

56621451 is a wasteful number, since it uses less digits than its factorization.

56621451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460381.

The product of its digits is 7200, while the sum is 30.

The square root of 56621451 is about 7524.7226526962. The cubic root of 56621451 is about 383.9962632557.

The spelling of 56621451 in words is "fifty-six million, six hundred twenty-one thousand, four hundred fifty-one".