91541236 has 12 divisors (see below), whose sum is σ = 162823780. Its totient is φ = 45020160.

The previous prime is 91541227. The next prime is 91541237. The reversal of 91541236 is 63214519.

It can be written as a sum of positive squares in 2 ways, for example, as 50324836 + 41216400 = 7094^2 + 6420^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91541198 and 91541207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91541237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187341 + ... + 187828.

Almost surely, 2^91541236 is an apocalyptic number.

It is an amenable number.

91541236 is a deficient number, since it is larger than the sum of its proper divisors (71282544).

91541236 is a wasteful number, since it uses less digits than its factorization.

91541236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375234 (or 375232 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 91541236 is about 9567.7184323119. The cubic root of 91541236 is about 450.6841215633.

The spelling of 91541236 in words is "ninety-one million, five hundred forty-one thousand, two hundred thirty-six".