656011051 has 12 divisors (see below), whose sum is σ = 671430760. Its totient is φ = 640935360.

The previous prime is 656011049. The next prime is 656011061. The reversal of 656011051 is 150110656.

It is not a de Polignac number, because 656011051 - 2¹ = 656011049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656011061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1148596 + ... + 1149166.

Almost surely, 2^656011051 is an apocalyptic number.

656011051 is a deficient number, since it is larger than the sum of its proper divisors (15419709).

656011051 is an equidigital number, since it uses as much as digits as its factorization.

656011051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086 (or 1033 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 656011051 is about 25612.7126833532. The cubic root of 656011051 is about 868.9011762793.

The spelling of 656011051 in words is "six hundred fifty-six million, eleven thousand, fifty-one".