91662151 has 4 divisors (see below), whose sum is σ = 104756752. Its totient is φ = 78567552.

The previous prime is 91662119. The next prime is 91662157. The reversal of 91662151 is 15126619.

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

It is not a de Polignac number, because 91662151 - 2⁵ = 91662119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91662157) 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, 6547290 + ... + 6547303.

It is an arithmetic number, because the mean of its divisors is an integer number (26189188).

Almost surely, 2^91662151 is an apocalyptic number.

91662151 is a deficient number, since it is larger than the sum of its proper divisors (13094601).

91662151 is a wasteful number, since it uses less digits than its factorization.

91662151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13094600.

The product of its digits is 3240, while the sum is 31.

The square root of 91662151 is about 9574.0352516585. The cubic root of 91662151 is about 450.8824674927.

The spelling of 91662151 in words is "ninety-one million, six hundred sixty-two thousand, one hundred fifty-one".