515656164 has 12 divisors (see below), whose sum is σ = 1203197744. Its totient is φ = 171885384.

The previous prime is 515656153. The next prime is 515656199. The reversal of 515656164 is 461656515.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21485662 + ... + 21485685.

Almost surely, 2^515656164 is an apocalyptic number.

It is an amenable number.

515656164 is an abundant number, since it is smaller than the sum of its proper divisors (687541580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

515656164 is a wasteful number, since it uses less digits than its factorization.

515656164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42971354 (or 42971352 counting only the distinct ones).

The product of its digits is 108000, while the sum is 39.

The square root of 515656164 is about 22708.0638540585. The cubic root of 515656164 is about 801.8997372603.

The spelling of 515656164 in words is "five hundred fifteen million, six hundred fifty-six thousand, one hundred sixty-four".