90174445 has 8 divisors (see below), whose sum is σ = 109062144. Its totient is φ = 71571024.

The previous prime is 90174433. The next prime is 90174451. The reversal of 90174445 is 54447109.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90174445 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90174445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70369 + ... + 71638.

It is an arithmetic number, because the mean of its divisors is an integer number (13632768).

Almost surely, 2^90174445 is an apocalyptic number.

It is an amenable number.

90174445 is a deficient number, since it is larger than the sum of its proper divisors (18887699).

90174445 is a wasteful number, since it uses less digits than its factorization.

90174445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142139.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 90174445 is about 9496.0225884314. The cubic root of 90174445 is about 448.4298280282.

The spelling of 90174445 in words is "ninety million, one hundred seventy-four thousand, four hundred forty-five".