56621774 has 8 divisors (see below), whose sum is σ = 92653848. Its totient is φ = 25737160.

The previous prime is 56621771. The next prime is 56621797. The reversal of 56621774 is 47712665.

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

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56621771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286837 + ... + 1286880.

It is an arithmetic number, because the mean of its divisors is an integer number (11581731).

Almost surely, 2^56621774 is an apocalyptic number.

56621774 is a deficient number, since it is larger than the sum of its proper divisors (36032074).

56621774 is a wasteful number, since it uses less digits than its factorization.

56621774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573730.

The product of its digits is 70560, while the sum is 38.

The square root of 56621774 is about 7524.7441152507. The cubic root of 56621774 is about 383.9969934299.

The spelling of 56621774 in words is "fifty-six million, six hundred twenty-one thousand, seven hundred seventy-four".