90173541 has 4 divisors (see below), whose sum is σ = 120231392. Its totient is φ = 60115692.

The previous prime is 90173533. The next prime is 90173543. The reversal of 90173541 is 14537109.

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 90173541 - 2³ = 90173533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90173499 and 90173508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90173543) 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, 15028921 + ... + 15028926.

It is an arithmetic number, because the mean of its divisors is an integer number (30057848).

Almost surely, 2^90173541 is an apocalyptic number.

It is an amenable number.

90173541 is a deficient number, since it is larger than the sum of its proper divisors (30057851).

90173541 is a wasteful number, since it uses less digits than its factorization.

90173541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30057850.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 90173541 is about 9495.9749894363. The cubic root of 90173541 is about 448.4283295182.

The spelling of 90173541 in words is "ninety million, one hundred seventy-three thousand, five hundred forty-one".