90936171 has 12 divisors (see below), whose sum is σ = 131439672. Its totient is φ = 60583776.

The previous prime is 90936143. The next prime is 90936217. The reversal of 90936171 is 17163909.

It is not a de Polignac number, because 90936171 - 2⁹ = 90935659 is a prime.

It is a super-2 number, since 2×90936171² = 16538774392282482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90936971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18175 + ... + 22631.

It is an arithmetic number, because the mean of its divisors is an integer number (10953306).

Almost surely, 2^90936171 is an apocalyptic number.

90936171 is a deficient number, since it is larger than the sum of its proper divisors (40503501).

90936171 is a wasteful number, since it uses less digits than its factorization.

90936171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6730 (or 6727 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 90936171 is about 9536.0458786648. The cubic root of 90936171 is about 449.6889554227.

The spelling of 90936171 in words is "ninety million, nine hundred thirty-six thousand, one hundred seventy-one".