90757538 has 4 divisors (see below), whose sum is σ = 136136310. Its totient is φ = 45378768.

The previous prime is 90757519. The next prime is 90757549. The reversal of 90757538 is 83575709.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 84033889 + 6723649 = 9167^2 + 2593^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22689383 + ... + 22689386.

Almost surely, 2^90757538 is an apocalyptic number.

90757538 is a deficient number, since it is larger than the sum of its proper divisors (45378772).

90757538 is a wasteful number, since it uses less digits than its factorization.

90757538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45378771.

The product of its (nonzero) digits is 264600, while the sum is 44.

The square root of 90757538 is about 9526.6750758069. The cubic root of 90757538 is about 449.3943093987.

The spelling of 90757538 in words is "ninety million, seven hundred fifty-seven thousand, five hundred thirty-eight".