91472535 has 48 divisors (see below), whose sum is σ = 197683200. Its totient is φ = 38013120.

The previous prime is 91472531. The next prime is 91472561. The reversal of 91472535 is 53527419.

It is not a de Polignac number, because 91472535 - 2² = 91472531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91472535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91472531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9735 + ... + 16664.

It is an arithmetic number, because the mean of its divisors is an integer number (4118400).

Almost surely, 2^91472535 is an apocalyptic number.

91472535 is an abundant number, since it is smaller than the sum of its proper divisors (106210665).

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

91472535 is a wasteful number, since it uses less digits than its factorization.

91472535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26428 (or 26425 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 91472535 is about 9564.1275085603. The cubic root of 91472535 is about 450.5713483472.

Subtracting from 91472535 its reverse (53527419), we obtain a triangular number (37945116 = T₈₇₁₁).

The spelling of 91472535 in words is "ninety-one million, four hundred seventy-two thousand, five hundred thirty-five".