90575 has 6 divisors (see below), whose sum is σ = 112344. Its totient is φ = 72440.

The previous prime is 90547. The next prime is 90583. The reversal of 90575 is 57509.

It is not a de Polignac number, because 90575 - 2⁶ = 90511 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a zygodrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1787 + ... + 1836.

It is an arithmetic number, because the mean of its divisors is an integer number (18724).

2⁹⁰⁵⁷⁵ is an apocalyptic number.

90575 is a deficient number, since it is larger than the sum of its proper divisors (21769).

90575 is a wasteful number, since it uses less digits than its factorization.

90575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633 (or 3628 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 26.

The square root of 90575 is about 300.9568075322. The cubic root of 90575 is about 44.9092822611.

Adding to 90575 its sum of digits (26), we get a square (90601 = 301²).

The spelling of 90575 in words is "ninety thousand, five hundred seventy-five".