91727225 has 12 divisors (see below), whose sum is σ = 115608300. Its totient is φ = 72177600.

The previous prime is 91727219. The next prime is 91727239. The reversal of 91727225 is 52272719.

It can be written as a sum of positive squares in 6 ways, for example, as 25321024 + 66406201 = 5032^2 + 8149^2 .

It is not a de Polignac number, because 91727225 - 2⁶ = 91727161 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28550 + ... + 31599.

It is an arithmetic number, because the mean of its divisors is an integer number (9634025).

Almost surely, 2^91727225 is an apocalyptic number.

It is an amenable number.

91727225 is a deficient number, since it is larger than the sum of its proper divisors (23881075).

91727225 is a wasteful number, since it uses less digits than its factorization.

91727225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60220 (or 60215 counting only the distinct ones).

The product of its digits is 17640, while the sum is 35.

The square root of 91727225 is about 9577.4331112256. The cubic root of 91727225 is about 450.9891410571.

The spelling of 91727225 in words is "ninety-one million, seven hundred twenty-seven thousand, two hundred twenty-five".