90259131 has 16 divisors (see below), whose sum is σ = 122094720. Its totient is φ = 59304960.

The previous prime is 90259121. The next prime is 90259189. The reversal of 90259131 is 13195209.

It is a de Polignac number, because none of the positive numbers 2^k-90259131 is a prime.

It is a super-2 number, since 2×90259131² = 16293421457750322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90259121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63355 + ... + 64763.

It is an arithmetic number, because the mean of its divisors is an integer number (7630920).

Almost surely, 2^90259131 is an apocalyptic number.

90259131 is a deficient number, since it is larger than the sum of its proper divisors (31835589).

90259131 is a wasteful number, since it uses less digits than its factorization.

90259131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 90259131 is about 9500.4805667924. The cubic root of 90259131 is about 448.5701628592.

The spelling of 90259131 in words is "ninety million, two hundred fifty-nine thousand, one hundred thirty-one".