90539851 has 4 divisors (see below), whose sum is σ = 92986912. Its totient is φ = 88092792.

The previous prime is 90539843. The next prime is 90539857. The reversal of 90539851 is 15893509.

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

It is a cyclic number.

It is not a de Polignac number, because 90539851 - 2³ = 90539843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90539857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1223475 + ... + 1223548.

It is an arithmetic number, because the mean of its divisors is an integer number (23246728).

Almost surely, 2^90539851 is an apocalyptic number.

90539851 is a deficient number, since it is larger than the sum of its proper divisors (2447061).

90539851 is a wasteful number, since it uses less digits than its factorization.

90539851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447060.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 90539851 is about 9515.2430867530. The cubic root of 90539851 is about 449.0347226716.

The spelling of 90539851 in words is "ninety million, five hundred thirty-nine thousand, eight hundred fifty-one".