91477452 has 54 divisors (see below), whose sum is σ = 235554172. Its totient is φ = 27610000.

The previous prime is 91477447. The next prime is 91477453. The reversal of 91477452 is 25477419.

It is a self number, because there is not a number n which added to its sum of digits gives 91477452.

It is not an unprimeable number, because it can be changed into a prime (91477453) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 364327 + ... + 364577.

Almost surely, 2^91477452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91477452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117777086).

91477452 is an abundant number, since it is smaller than the sum of its proper divisors (144076720).

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

91477452 is a wasteful number, since it uses less digits than its factorization.

91477452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531 (or 267 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 91477452 is about 9564.3845593953. The cubic root of 91477452 is about 450.5794215159.

The spelling of 91477452 in words is "ninety-one million, four hundred seventy-seven thousand, four hundred fifty-two".