80537992 has 8 divisors (see below), whose sum is σ = 151008750. Its totient is φ = 40268992.

The previous prime is 80537911. The next prime is 80537999. The reversal of 80537992 is 29973508.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62948356 + 17589636 = 7934^2 + 4194^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (80537999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5033617 + ... + 5033632.

Almost surely, 2^80537992 is an apocalyptic number.

It is an amenable number.

80537992 is a deficient number, since it is larger than the sum of its proper divisors (70470758).

80537992 is a wasteful number, since it uses less digits than its factorization.

80537992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10067255 (or 10067251 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 80537992 is about 8974.2961841027. The cubic root of 80537992 is about 431.8506714102.

The spelling of 80537992 in words is "eighty million, five hundred thirty-seven thousand, nine hundred ninety-two".