90081159 has 12 divisors (see below), whose sum is σ = 139717944. Its totient is φ = 51474864.

The previous prime is 90081151. The next prime is 90081161. The reversal of 90081159 is 95118009.

It is not a de Polignac number, because 90081159 - 2³ = 90081151 is a prime.

It is a super-2 number, since 2×90081159² = 16229230413566562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90081151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 306252 + ... + 306545.

It is an arithmetic number, because the mean of its divisors is an integer number (11643162).

Almost surely, 2^90081159 is an apocalyptic number.

90081159 is a deficient number, since it is larger than the sum of its proper divisors (49636785).

90081159 is a wasteful number, since it uses less digits than its factorization.

90081159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612814 (or 612807 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 90081159 is about 9491.1094715002. The cubic root of 90081159 is about 448.2751402322.

The spelling of 90081159 in words is "ninety million, eighty-one thousand, one hundred fifty-nine".