90258131 has 2 divisors, whose sum is σ = 90258132. Its totient is φ = 90258130.

The previous prime is 90258127. The next prime is 90258139. The reversal of 90258131 is 13185209.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90258131 - 2² = 90258127 is a prime.

It is a super-2 number, since 2×90258131² = 16293060423226322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90258094 and 90258103.

It is not a weakly prime, because it can be changed into another prime (90258139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45129065 + 45129066.

It is an arithmetic number, because the mean of its divisors is an integer number (45129066).

Almost surely, 2^90258131 is an apocalyptic number.

90258131 is a deficient number, since it is larger than the sum of its proper divisors (1).

90258131 is an equidigital number, since it uses as much as digits as its factorization.

90258131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 90258131 is about 9500.4279377300. The cubic root of 90258131 is about 448.5685062519.

The spelling of 90258131 in words is "ninety million, two hundred fifty-eight thousand, one hundred thirty-one".