90557173 has 8 divisors (see below), whose sum is σ = 108941120. Its totient is φ = 73535040.

The previous prime is 90557171. The next prime is 90557177. The reversal of 90557173 is 37175509.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90557173 - 2¹ = 90557171 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90557171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340308 + ... + 340573.

It is an arithmetic number, because the mean of its divisors is an integer number (13617640).

Almost surely, 2^90557173 is an apocalyptic number.

It is an amenable number.

90557173 is a deficient number, since it is larger than the sum of its proper divisors (18383947).

90557173 is a wasteful number, since it uses less digits than its factorization.

90557173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680907.

The product of its (nonzero) digits is 33075, while the sum is 37.

The square root of 90557173 is about 9516.1532669456. The cubic root of 90557173 is about 449.0633571472.

The spelling of 90557173 in words is "ninety million, five hundred fifty-seven thousand, one hundred seventy-three".