83537081 has 8 divisors (see below), whose sum is σ = 90175680. Its totient is φ = 77149072.

The previous prime is 83537071. The next prime is 83537087. The reversal of 83537081 is 18073538.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83537081 - 2²² = 79342777 is a prime.

It is a super-2 number, since 2×83537081² = 13956887804001122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83537087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61955 + ... + 63288.

It is an arithmetic number, because the mean of its divisors is an integer number (11271960).

Almost surely, 2^83537081 is an apocalyptic number.

It is an amenable number.

83537081 is a deficient number, since it is larger than the sum of its proper divisors (6638599).

83537081 is a wasteful number, since it uses less digits than its factorization.

83537081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125295.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 83537081 is about 9139.8621980859. The cubic root of 83537081 is about 437.1459226039.

The spelling of 83537081 in words is "eighty-three million, five hundred thirty-seven thousand, eighty-one".