91265737 has 4 divisors (see below), whose sum is σ = 93388240. Its totient is φ = 89143236.

The previous prime is 91265731. The next prime is 91265747. The reversal of 91265737 is 73756219.

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 not a de Polignac number, because 91265737 - 2⁷ = 91265609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91265737.

It is not an unprimeable number, because it can be changed into a prime (91265731) 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 3 ways as a sum of consecutive naturals, for example, 1061187 + ... + 1061272.

It is an arithmetic number, because the mean of its divisors is an integer number (23347060).

Almost surely, 2^91265737 is an apocalyptic number.

It is an amenable number.

91265737 is a deficient number, since it is larger than the sum of its proper divisors (2122503).

91265737 is a wasteful number, since it uses less digits than its factorization.

91265737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122502.

The product of its digits is 79380, while the sum is 40.

The square root of 91265737 is about 9553.3102639870. The cubic root of 91265737 is about 450.2315466813.

The spelling of 91265737 in words is "ninety-one million, two hundred sixty-five thousand, seven hundred thirty-seven".