90572135 has 4 divisors (see below), whose sum is σ = 108686568. Its totient is φ = 72457704.

The previous prime is 90572117. The next prime is 90572143. The reversal of 90572135 is 53127509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53127509 = 373 ⋅142433.

It is a cyclic number.

It is not a de Polignac number, because 90572135 - 2²⁰ = 89523559 is a prime.

It is a Duffinian number.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 9057209 + ... + 9057218.

It is an arithmetic number, because the mean of its divisors is an integer number (27171642).

Almost surely, 2^90572135 is an apocalyptic number.

90572135 is a deficient number, since it is larger than the sum of its proper divisors (18114433).

90572135 is a wasteful number, since it uses less digits than its factorization.

90572135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18114432.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 90572135 is about 9516.9393714576. The cubic root of 90572135 is about 449.0880874391.

The spelling of 90572135 in words is "ninety million, five hundred seventy-two thousand, one hundred thirty-five".