90040053 has 4 divisors (see below), whose sum is σ = 120053408. Its totient is φ = 60026700.

The previous prime is 90040051. The next prime is 90040061. The reversal of 90040053 is 35004009.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 90040053 - 2¹ = 90040051 is a prime.

It is a super-2 number, since 2×90040053² = 16214422288485618, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90040051) 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, 15006673 + ... + 15006678.

It is an arithmetic number, because the mean of its divisors is an integer number (30013352).

Almost surely, 2^90040053 is an apocalyptic number.

It is an amenable number.

90040053 is a deficient number, since it is larger than the sum of its proper divisors (30013355).

90040053 is a wasteful number, since it uses less digits than its factorization.

90040053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30013354.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 90040053 is about 9488.9437241455. The cubic root of 90040053 is about 448.2069439461.

The spelling of 90040053 in words is "ninety million, forty thousand, fifty-three".