90117574 has 4 divisors (see below), whose sum is σ = 135176364. Its totient is φ = 45058786.

The previous prime is 90117569. The next prime is 90117581. The reversal of 90117574 is 47571109.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47571109 = 769 ⋅61861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22529392 + ... + 22529395.

It is an arithmetic number, because the mean of its divisors is an integer number (33794091).

Almost surely, 2^90117574 is an apocalyptic number.

90117574 is a deficient number, since it is larger than the sum of its proper divisors (45058790).

90117574 is a wasteful number, since it uses less digits than its factorization.

90117574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45058789.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 90117574 is about 9493.0276519138. The cubic root of 90117574 is about 448.3355366579.

The spelling of 90117574 in words is "ninety million, one hundred seventeen thousand, five hundred seventy-four".