90325881 has 16 divisors (see below), whose sum is σ = 134798400. Its totient is φ = 59775264.

The previous prime is 90325831. The next prime is 90325931. The reversal of 90325881 is 18852309.

It is an interprime number because it is at equal distance from previous prime (90325831) and next prime (90325931).

It is not a de Polignac number, because 90325881 - 2⁶ = 90325817 is a prime.

It is a super-2 number, since 2×90325881² = 16317529556852322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90325801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8511 + ... + 15908.

It is an arithmetic number, because the mean of its divisors is an integer number (8424900).

Almost surely, 2^90325881 is an apocalyptic number.

It is an amenable number.

90325881 is a deficient number, since it is larger than the sum of its proper divisors (44472519).

90325881 is a wasteful number, since it uses less digits than its factorization.

90325881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24565 (or 24559 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 90325881 is about 9503.9928977246. The cubic root of 90325881 is about 448.6807137438.

The spelling of 90325881 in words is "ninety million, three hundred twenty-five thousand, eight hundred eighty-one".