91542951 has 6 divisors (see below), whose sum is σ = 132228720. Its totient is φ = 61028628.

The previous prime is 91542947. The next prime is 91542953. The reversal of 91542951 is 15924519.

It is not a de Polignac number, because 91542951 - 2² = 91542947 is a prime.

It is a super-3 number, since 3×91542951³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91542953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5085711 + ... + 5085728.

It is an arithmetic number, because the mean of its divisors is an integer number (22038120).

Almost surely, 2^91542951 is an apocalyptic number.

91542951 is a deficient number, since it is larger than the sum of its proper divisors (40685769).

91542951 is a wasteful number, since it uses less digits than its factorization.

91542951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10171445 (or 10171442 counting only the distinct ones).

The product of its digits is 16200, while the sum is 36.

The square root of 91542951 is about 9567.8080561851. The cubic root of 91542951 is about 450.6869360269.

The spelling of 91542951 in words is "ninety-one million, five hundred forty-two thousand, nine hundred fifty-one".