56020657 has 8 divisors (see below), whose sum is σ = 69844032. Its totient is φ = 43652400.

The previous prime is 56020639. The next prime is 56020667. The reversal of 56020657 is 75602065.

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

It is not a de Polignac number, because 56020657 - 2²³ = 47632049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56020667) 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, 363694 + ... + 363847.

It is an arithmetic number, because the mean of its divisors is an integer number (8730504).

Almost surely, 2^56020657 is an apocalyptic number.

It is an amenable number.

56020657 is a deficient number, since it is larger than the sum of its proper divisors (13823375).

56020657 is a wasteful number, since it uses less digits than its factorization.

56020657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727559.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 56020657 is about 7484.6948501592. The cubic root of 56020657 is about 382.6332729374.

The spelling of 56020657 in words is "fifty-six million, twenty thousand, six hundred fifty-seven".