80561392 has 40 divisors (see below), whose sum is σ = 160895952. Its totient is φ = 39052800.

The previous prime is 80561389. The next prime is 80561399. The reversal of 80561392 is 29316508.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80561399) 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, 148642 + ... + 149182.

Almost surely, 2^80561392 is an apocalyptic number.

80561392 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

80561392 is a deficient number, since it is larger than the sum of its proper divisors (80334560).

80561392 is a wasteful number, since it uses less digits than its factorization.

80561392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817 (or 811 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 80561392 is about 8975.5998128259. The cubic root of 80561392 is about 431.8924915373.

The spelling of 80561392 in words is "eighty million, five hundred sixty-one thousand, three hundred ninety-two".