91225726 has 16 divisors (see below), whose sum is σ = 146194560. Its totient is φ = 42566040.

The previous prime is 91225709. The next prime is 91225727. The reversal of 91225726 is 62752219.

It is a junction number, because it is equal to n+sod(n) for n = 91225691 and 91225700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91225727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15370 + ... + 20461.

It is an arithmetic number, because the mean of its divisors is an integer number (9137160).

Almost surely, 2^91225726 is an apocalyptic number.

91225726 is a deficient number, since it is larger than the sum of its proper divisors (54968834).

91225726 is a wasteful number, since it uses less digits than its factorization.

91225726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35919.

The product of its digits is 15120, while the sum is 34.

The square root of 91225726 is about 9551.2159435331. The cubic root of 91225726 is about 450.1657430616.

The spelling of 91225726 in words is "ninety-one million, two hundred twenty-five thousand, seven hundred twenty-six".