80732537 has 4 divisors (see below), whose sum is σ = 80833140. Its totient is φ = 80631936.

The previous prime is 80732513. The next prime is 80732563. The reversal of 80732537 is 73523708.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54405376 + 26327161 = 7376^2 + 5131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80732537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80732497 and 80732506.

It is not an unprimeable number, because it can be changed into a prime (80732437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49088 + ... + 50705.

It is an arithmetic number, because the mean of its divisors is an integer number (20208285).

Almost surely, 2^80732537 is an apocalyptic number.

It is an amenable number.

80732537 is a deficient number, since it is larger than the sum of its proper divisors (100603).

80732537 is an equidigital number, since it uses as much as digits as its factorization.

80732537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100602.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 80732537 is about 8985.1286579548. The cubic root of 80732537 is about 432.1981133646.

The spelling of 80732537 in words is "eighty million, seven hundred thirty-two thousand, five hundred thirty-seven".