91534536 has 40 divisors (see below), whose sum is σ = 256383270. Its totient is φ = 30511296.

The previous prime is 91534519. The next prime is 91534561. The reversal of 91534536 is 63543519.

91534536 is a `hidden beast` number, since 91 + 5 + 34 + 536 = 666.

It can be written as a sum of positive squares in only one way, i.e., 89302500 + 2232036 = 9450^2 + 1494^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 91534536.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 69981 + ... + 71276.

Almost surely, 2^91534536 is an apocalyptic number.

It is an amenable number.

91534536 is an abundant number, since it is smaller than the sum of its proper divisors (164848734).

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

91534536 is a wasteful number, since it uses less digits than its factorization.

91534536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141275 (or 141262 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 91534536 is about 9567.3682901830. The cubic root of 91534536 is about 450.6731259456.

It can be divided in two parts, 9153 and 4536, that added together give a square (13689 = 117²).

The spelling of 91534536 in words is "ninety-one million, five hundred thirty-four thousand, five hundred thirty-six".