90831275 has 12 divisors (see below), whose sum is σ = 112833552. Its totient is φ = 72534240.

The previous prime is 90831269. The next prime is 90831281. The reversal of 90831275 is 57213809.

It is an interprime number because it is at equal distance from previous prime (90831269) and next prime (90831281).

It is not a de Polignac number, because 90831275 - 2⁸ = 90831019 is a prime.

It is a super-3 number, since 3×90831275³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12362 + ... + 18288.

It is an arithmetic number, because the mean of its divisors is an integer number (9402796).

Almost surely, 2^90831275 is an apocalyptic number.

90831275 is a deficient number, since it is larger than the sum of its proper divisors (22002277).

90831275 is a wasteful number, since it uses less digits than its factorization.

90831275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6550 (or 6545 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 90831275 is about 9530.5443181384. The cubic root of 90831275 is about 449.5159816359.

The spelling of 90831275 in words is "ninety million, eight hundred thirty-one thousand, two hundred seventy-five".