80921252 has 24 divisors (see below), whose sum is σ = 146931960. Its totient is φ = 38949120.

The previous prime is 80921237. The next prime is 80921261. The reversal of 80921252 is 25212908.

It can be written as a sum of positive squares in 4 ways, for example, as 173056 + 80748196 = 416^2 + 8986^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48008 + ... + 49664.

It is an arithmetic number, because the mean of its divisors is an integer number (6122165).

Almost surely, 2^80921252 is an apocalyptic number.

It is an amenable number.

80921252 is a deficient number, since it is larger than the sum of its proper divisors (66010708).

80921252 is a wasteful number, since it uses less digits than its factorization.

80921252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111 (or 2109 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 80921252 is about 8995.6240472799. The cubic root of 80921252 is about 432.5346104816.

The spelling of 80921252 in words is "eighty million, nine hundred twenty-one thousand, two hundred fifty-two".