90452131 has 16 divisors (see below), whose sum is σ = 116663040. Its totient is φ = 68050080.

The previous prime is 90452119. The next prime is 90452147. The reversal of 90452131 is 13125409.

It is not a de Polignac number, because 90452131 - 2⁵ = 90452099 is a prime.

It is a super-2 number, since 2×90452131² = 16363176004882322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90452096 and 90452105.

It is not an unprimeable number, because it can be changed into a prime (90452431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18021 + ... + 22486.

It is an arithmetic number, because the mean of its divisors is an integer number (7291440).

Almost surely, 2^90452131 is an apocalyptic number.

90452131 is a deficient number, since it is larger than the sum of its proper divisors (26210909).

90452131 is a wasteful number, since it uses less digits than its factorization.

90452131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40554.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 90452131 is about 9510.6325236548. The cubic root of 90452131 is about 448.8896592800.

It can be divided in two parts, 904 and 52131, that added together give a palindrome (53035).

The spelling of 90452131 in words is "ninety million, four hundred fifty-two thousand, one hundred thirty-one".