91752086 has 4 divisors (see below), whose sum is σ = 137628132. Its totient is φ = 45876042.

The previous prime is 91752053. The next prime is 91752103. The reversal of 91752086 is 68025719.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68025719 = 19 ⋅3580301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22938020 + ... + 22938023.

It is an arithmetic number, because the mean of its divisors is an integer number (34407033).

Almost surely, 2^91752086 is an apocalyptic number.

91752086 is a deficient number, since it is larger than the sum of its proper divisors (45876046).

91752086 is a wasteful number, since it uses less digits than its factorization.

91752086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45876045.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 91752086 is about 9578.7309180288. The cubic root of 91752086 is about 451.0298815179.

The spelling of 91752086 in words is "ninety-one million, seven hundred fifty-two thousand, eighty-six".