56620081 has 16 divisors (see below), whose sum is σ = 68726016. Its totient is φ = 45536256.

The previous prime is 56620079. The next prime is 56620087. The reversal of 56620081 is 18002665.

It is a cyclic number.

It is not a de Polignac number, because 56620081 - 2¹ = 56620079 is a prime.

It is a super-3 number, since 3×56620081³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56620087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57465 + ... + 58441.

It is an arithmetic number, because the mean of its divisors is an integer number (4295376).

Almost surely, 2^56620081 is an apocalyptic number.

It is an amenable number.

56620081 is a deficient number, since it is larger than the sum of its proper divisors (12105935).

56620081 is a wasteful number, since it uses less digits than its factorization.

56620081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 56620081 is about 7524.6316188901. The cubic root of 56620081 is about 383.9931662014.

The spelling of 56620081 in words is "fifty-six million, six hundred twenty thousand, eighty-one".