56620517 has 4 divisors (see below), whose sum is σ = 56724576. Its totient is φ = 56516460.

The previous prime is 56620511. The next prime is 56620541. The reversal of 56620517 is 71502665.

It is a happy number.

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 56620517 - 2⁶ = 56620453 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 (56620511) 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, 51209 + ... + 52302.

It is an arithmetic number, because the mean of its divisors is an integer number (14181144).

Almost surely, 2^56620517 is an apocalyptic number.

It is an amenable number.

56620517 is a deficient number, since it is larger than the sum of its proper divisors (104059).

56620517 is a wasteful number, since it uses less digits than its factorization.

56620517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104058.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 56620517 is about 7524.6605903522. The cubic root of 56620517 is about 383.9941518387.

The spelling of 56620517 in words is "fifty-six million, six hundred twenty thousand, five hundred seventeen".