80137517 has 4 divisors (see below), whose sum is σ = 81495840. Its totient is φ = 78779196.

The previous prime is 80137481. The next prime is 80137529. The reversal of 80137517 is 71573108.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80137517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80133517) 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, 679073 + ... + 679190.

It is an arithmetic number, because the mean of its divisors is an integer number (20373960).

Almost surely, 2^80137517 is an apocalyptic number.

It is an amenable number.

80137517 is a deficient number, since it is larger than the sum of its proper divisors (1358323).

80137517 is a wasteful number, since it uses less digits than its factorization.

80137517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358322.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 80137517 is about 8951.9560432344. The cubic root of 80137517 is about 431.1336895042.

The spelling of 80137517 in words is "eighty million, one hundred thirty-seven thousand, five hundred seventeen".