80521164 has 36 divisors (see below), whose sum is σ = 214254040. Its totient is φ = 25427520.

The previous prime is 80521153. The next prime is 80521169. The reversal of 80521164 is 46112508.

80521164 is a `hidden beast` number, since 80 + 521 + 1 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (80521169) 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, 58177 + ... + 59544.

Almost surely, 2^80521164 is an apocalyptic number.

It is an amenable number.

80521164 is an abundant number, since it is smaller than the sum of its proper divisors (133732876).

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

80521164 is a wasteful number, since it uses less digits than its factorization.

80521164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117750 (or 117745 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 80521164 is about 8973.3585685628. The cubic root of 80521164 is about 431.8205916548.

It can be divided in two parts, 8052 and 1164, that added together give a square (9216 = 96²).

The spelling of 80521164 in words is "eighty million, five hundred twenty-one thousand, one hundred sixty-four".