90112502 has 4 divisors (see below), whose sum is σ = 135168756. Its totient is φ = 45056250.

The previous prime is 90112499. The next prime is 90112507. The reversal of 90112502 is 20521109.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20521109 = 7 ⋅2931587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90112507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22528124 + ... + 22528127.

It is an arithmetic number, because the mean of its divisors is an integer number (33792189).

Almost surely, 2^90112502 is an apocalyptic number.

90112502 is a deficient number, since it is larger than the sum of its proper divisors (45056254).

90112502 is a wasteful number, since it uses less digits than its factorization.

90112502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45056253.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 90112502 is about 9492.7605047215. The cubic root of 90112502 is about 448.3271254221.

The spelling of 90112502 in words is "ninety million, one hundred twelve thousand, five hundred two".