90055453 has 4 divisors (see below), whose sum is σ = 90167580. Its totient is φ = 89943328.

The previous prime is 90055397. The next prime is 90055489. The reversal of 90055453 is 35455009.

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 76965529 + 13089924 = 8773^2 + 3618^2 .

It is a cyclic number.

It is not a de Polignac number, because 90055453 - 2⁹ = 90054941 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90055253) 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, 54850 + ... + 56467.

It is an arithmetic number, because the mean of its divisors is an integer number (22541895).

Almost surely, 2^90055453 is an apocalyptic number.

It is an amenable number.

90055453 is a deficient number, since it is larger than the sum of its proper divisors (112127).

90055453 is a wasteful number, since it uses less digits than its factorization.

90055453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112126.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 90055453 is about 9489.7551601714. The cubic root of 90055453 is about 448.2324955135.

The spelling of 90055453 in words is "ninety million, fifty-five thousand, four hundred fifty-three".