80437081 has 6 divisors (see below), whose sum is σ = 85447310. Its totient is φ = 75705216.

The previous prime is 80437079. The next prime is 80437103. The reversal of 80437081 is 18073408.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 55636681 + 24800400 = 7459^2 + 4980^2 .

It is not a de Polignac number, because 80437081 - 2¹ = 80437079 is a prime.

It is a super-2 number, since 2×80437081² = 12940247999601122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80437061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138876 + ... + 139453.

Almost surely, 2^80437081 is an apocalyptic number.

It is an amenable number.

80437081 is a deficient number, since it is larger than the sum of its proper divisors (5010229).

80437081 is a wasteful number, since it uses less digits than its factorization.

80437081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278363 (or 278346 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 80437081 is about 8968.6721982688. The cubic root of 80437081 is about 431.6702319455.

The spelling of 80437081 in words is "eighty million, four hundred thirty-seven thousand, eighty-one".