91512954 has 48 divisors (see below), whose sum is σ = 214486272. Its totient is φ = 28031904.

The previous prime is 91512947. The next prime is 91512959. The reversal of 91512954 is 45921519.

91512954 is a `hidden beast` number, since 91 + 512 + 9 + 54 = 666.

It is a super-3 number, since 3×91512954³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (91512959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60799 + ... + 62285.

It is an arithmetic number, because the mean of its divisors is an integer number (4468464).

Almost surely, 2^91512954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91512954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107243136).

91512954 is an abundant number, since it is smaller than the sum of its proper divisors (122973318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91512954 is a wasteful number, since it uses less digits than its factorization.

91512954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1768 counting only the distinct ones).

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

The square root of 91512954 is about 9566.2403273177. The cubic root of 91512954 is about 450.6377032795.

The spelling of 91512954 in words is "ninety-one million, five hundred twelve thousand, nine hundred fifty-four".