90253 has 4 divisors (see below), whose sum is σ = 95580. Its totient is φ = 84928.

The previous prime is 90247. The next prime is 90263. The reversal of 90253 is 35209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35209 = 137 ⋅257.

It can be written as a sum of positive squares in 2 ways, for example, as 26244 + 64009 = 162^2 + 253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2638 + ... + 2671.

It is an arithmetic number, because the mean of its divisors is an integer number (23895).

2⁹⁰²⁵³ is an apocalyptic number.

It is an amenable number.

90253 is a deficient number, since it is larger than the sum of its proper divisors (5327).

90253 is a wasteful number, since it uses less digits than its factorization.

90253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5326.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 90253 is about 300.4213707445. The cubic root of 90253 is about 44.8560006007.

It can be divided in two parts, 90 and 253, that added together give a palindrome (343).

The spelling of 90253 in words is "ninety thousand, two hundred fifty-three".