91622155 has 8 divisors (see below), whose sum is σ = 110301984. Its totient is φ = 73060800.

The previous prime is 91622149. The next prime is 91622159. The reversal of 91622155 is 55122619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91622155 - 2³ = 91622147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91622159) 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 7 ways as a sum of consecutive naturals, for example, 27906 + ... + 31015.

It is an arithmetic number, because the mean of its divisors is an integer number (13787748).

Almost surely, 2^91622155 is an apocalyptic number.

91622155 is a deficient number, since it is larger than the sum of its proper divisors (18679829).

91622155 is a wasteful number, since it uses less digits than its factorization.

91622155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59237.

The product of its digits is 5400, while the sum is 31.

The square root of 91622155 is about 9571.9462493267. The cubic root of 91622155 is about 450.8168783754.

The spelling of 91622155 in words is "ninety-one million, six hundred twenty-two thousand, one hundred fifty-five".