91477512 has 240 divisors, whose sum is σ = 309537360. Its totient is φ = 25147584.

The previous prime is 91477511. The next prime is 91477543. The reversal of 91477512 is 21577419.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (91477511) 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 59 ways as a sum of consecutive naturals, for example, 1365303 + ... + 1365369.

It is an arithmetic number, because the mean of its divisors is an integer number (1289739).

Almost surely, 2^91477512 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 91477512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154768680).

91477512 is an abundant number, since it is smaller than the sum of its proper divisors (218059848).

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

91477512 is a wasteful number, since it uses less digits than its factorization.

91477512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 122 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 91477512 is about 9564.3876960316. The cubic root of 91477512 is about 450.5795200275.

The spelling of 91477512 in words is "ninety-one million, four hundred seventy-seven thousand, five hundred twelve".