91137433 has 4 divisors (see below), whose sum is σ = 95934160. Its totient is φ = 86340708.

The previous prime is 91137421. The next prime is 91137439. The reversal of 91137433 is 33473119.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91137433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91137395 and 91137404.

It is not an unprimeable number, because it can be changed into a prime (91137439) 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, 2398335 + ... + 2398372.

It is an arithmetic number, because the mean of its divisors is an integer number (23983540).

Almost surely, 2^91137433 is an apocalyptic number.

It is an amenable number.

91137433 is a deficient number, since it is larger than the sum of its proper divisors (4796727).

91137433 is a wasteful number, since it uses less digits than its factorization.

91137433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4796726.

The product of its digits is 6804, while the sum is 31.

The square root of 91137433 is about 9546.5927429633. The cubic root of 91137433 is about 450.0204649129.

The spelling of 91137433 in words is "ninety-one million, one hundred thirty-seven thousand, four hundred thirty-three".