80515156 has 6 divisors (see below), whose sum is σ = 140901530. Its totient is φ = 40257576.

The previous prime is 80515151. The next prime is 80515159. The reversal of 80515156 is 65151508.

It can be written as a sum of positive squares in only one way, i.e., 79495056 + 1020100 = 8916^2 + 1010^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80515151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10064391 + ... + 10064398.

Almost surely, 2^80515156 is an apocalyptic number.

It is an amenable number.

80515156 is a deficient number, since it is larger than the sum of its proper divisors (60386374).

80515156 is a wasteful number, since it uses less digits than its factorization.

80515156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20128793 (or 20128791 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 31.

The square root of 80515156 is about 8973.0237935715. The cubic root of 80515156 is about 431.8098514448.

The spelling of 80515156 in words is "eighty million, five hundred fifteen thousand, one hundred fifty-six".