656556051 has 8 divisors (see below), whose sum is σ = 876549520. Its totient is φ = 437133312.

The previous prime is 656556029. The next prime is 656556067. The reversal of 656556051 is 150655656.

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

It is not a de Polignac number, because 656556051 - 2⁶ = 656555987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656556151) 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, 139990 + ... + 144603.

It is an arithmetic number, because the mean of its divisors is an integer number (109568690).

Almost surely, 2^656556051 is an apocalyptic number.

656556051 is a deficient number, since it is larger than the sum of its proper divisors (219993469).

656556051 is a wasteful number, since it uses less digits than its factorization.

656556051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285365.

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 656556051 is about 25623.3497224699. The cubic root of 656556051 is about 869.1417312019.

The spelling of 656556051 in words is "six hundred fifty-six million, five hundred fifty-six thousand, fifty-one".