91245755 has 8 divisors (see below), whose sum is σ = 109672224. Its totient is φ = 72878400.

The previous prime is 91245751. The next prime is 91245769. The reversal of 91245755 is 55754219.

It is a happy number.

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

It is not a de Polignac number, because 91245755 - 2² = 91245751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91245751) 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, 11306 + ... + 17615.

It is an arithmetic number, because the mean of its divisors is an integer number (13709028).

Almost surely, 2^91245755 is an apocalyptic number.

91245755 is a deficient number, since it is larger than the sum of its proper divisors (18426469).

91245755 is a wasteful number, since it uses less digits than its factorization.

91245755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29557.

The product of its digits is 63000, while the sum is 38.

The square root of 91245755 is about 9552.2643912321. The cubic root of 91245755 is about 450.1986859250.

The spelling of 91245755 in words is "ninety-one million, two hundred forty-five thousand, seven hundred fifty-five".