90043551 has 24 divisors (see below), whose sum is σ = 146162016. Its totient is φ = 53000640.

The previous prime is 90043537. The next prime is 90043553. The reversal of 90043551 is 15534009.

It is not a de Polignac number, because 90043551 - 2⁷ = 90043423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90043553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14040 + ... + 19421.

It is an arithmetic number, because the mean of its divisors is an integer number (6090084).

Almost surely, 2^90043551 is an apocalyptic number.

90043551 is a deficient number, since it is larger than the sum of its proper divisors (56118465).

90043551 is a wasteful number, since it uses less digits than its factorization.

90043551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33503 (or 33500 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 90043551 is about 9489.1280421333. The cubic root of 90043551 is about 448.2127480578.

The spelling of 90043551 in words is "ninety million, forty-three thousand, five hundred fifty-one".