91230255 has 24 divisors (see below), whose sum is σ = 158492880. Its totient is φ = 48545280.

The previous prime is 91230247. The next prime is 91230257. The reversal of 91230255 is 55203219.

It is not a de Polignac number, because 91230255 - 2³ = 91230247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91230257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20031 + ... + 24159.

It is an arithmetic number, because the mean of its divisors is an integer number (6603870).

Almost surely, 2^91230255 is an apocalyptic number.

91230255 is a deficient number, since it is larger than the sum of its proper divisors (67262625).

91230255 is a wasteful number, since it uses less digits than its factorization.

91230255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4631 (or 4628 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 91230255 is about 9551.4530308221. The cubic root of 91230255 is about 450.1731925937.

The spelling of 91230255 in words is "ninety-one million, two hundred thirty thousand, two hundred fifty-five".