90475 has 24 divisors (see below), whose sum is σ = 142848. Its totient is φ = 55200.

The previous prime is 90473. The next prime is 90481. The reversal of 90475 is 57409.

It is not a de Polignac number, because 90475 - 2¹ = 90473 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1902 + ... + 1948.

It is an arithmetic number, because the mean of its divisors is an integer number (5952).

2⁹⁰⁴⁷⁵ is an apocalyptic number.

90475 is a deficient number, since it is larger than the sum of its proper divisors (52373).

90475 is a wasteful number, since it uses less digits than its factorization.

90475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 90475 is about 300.7906248539. The cubic root of 90475 is about 44.8927486996.

It can be divided in two parts, 904 and 75, that added together give a palindrome (979).

The spelling of 90475 in words is "ninety thousand, four hundred seventy-five".