91500063 has 8 divisors (see below), whose sum is σ = 122435376. Its totient is φ = 60782400.

The previous prime is 91500053. The next prime is 91500089. The reversal of 91500063 is 36000519.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91500063 - 2⁴ = 91500047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91500053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53428 + ... + 55113.

It is an arithmetic number, because the mean of its divisors is an integer number (15304422).

Almost surely, 2^91500063 is an apocalyptic number.

91500063 is a deficient number, since it is larger than the sum of its proper divisors (30935313).

91500063 is a wasteful number, since it uses less digits than its factorization.

91500063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108825.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 91500063 is about 9565.5665279167. The cubic root of 91500063 is about 450.6165425470.

The spelling of 91500063 in words is "ninety-one million, five hundred thousand, sixty-three".