90160237 has 4 divisors (see below), whose sum is σ = 90182556. Its totient is φ = 90137920.

The previous prime is 90160229. The next prime is 90160243. The reversal of 90160237 is 73206109.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73206109 = 647 ⋅113147.

It can be written as a sum of positive squares in 2 ways, for example, as 81974916 + 8185321 = 9054^2 + 2861^2 .

It is a cyclic number.

It is not a de Polignac number, because 90160237 - 2³ = 90160229 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 (90160247) 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, 3214 + ... + 13807.

It is an arithmetic number, because the mean of its divisors is an integer number (22545639).

Almost surely, 2^90160237 is an apocalyptic number.

It is an amenable number.

90160237 is a deficient number, since it is larger than the sum of its proper divisors (22319).

90160237 is a wasteful number, since it uses less digits than its factorization.

90160237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22318.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 90160237 is about 9495.2744562756. The cubic root of 90160237 is about 448.4062750669.

The spelling of 90160237 in words is "ninety million, one hundred sixty thousand, two hundred thirty-seven".