90245401 has 4 divisors (see below), whose sum is σ = 95553972. Its totient is φ = 84936832.

The previous prime is 90245369. The next prime is 90245411. The reversal of 90245401 is 10454209.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69305625 + 20939776 = 8325^2 + 4576^2 .

It is a cyclic number.

It is not a de Polignac number, because 90245401 - 2⁵ = 90245369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90245411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2654260 + ... + 2654293.

It is an arithmetic number, because the mean of its divisors is an integer number (23888493).

Almost surely, 2^90245401 is an apocalyptic number.

It is an amenable number.

90245401 is a deficient number, since it is larger than the sum of its proper divisors (5308571).

90245401 is a wasteful number, since it uses less digits than its factorization.

90245401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5308570.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 90245401 is about 9499.7579442847. The cubic root of 90245401 is about 448.5474165709.

The spelling of 90245401 in words is "ninety million, two hundred forty-five thousand, four hundred one".