91245801 has 16 divisors (see below), whose sum is σ = 125233920. Its totient is φ = 59069520.

The previous prime is 91245773. The next prime is 91245821. The reversal of 91245801 is 10854219.

It is a happy number.

It is not a de Polignac number, because 91245801 - 2⁵ = 91245769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91245821) 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 15 ways as a sum of consecutive naturals, for example, 11586 + ... + 17796.

It is an arithmetic number, because the mean of its divisors is an integer number (7827120).

Almost surely, 2^91245801 is an apocalyptic number.

It is an amenable number.

91245801 is a deficient number, since it is larger than the sum of its proper divisors (33988119).

91245801 is a wasteful number, since it uses less digits than its factorization.

91245801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6356.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 91245801 is about 9552.2667990378. The cubic root of 91245801 is about 450.1987615783.

The spelling of 91245801 in words is "ninety-one million, two hundred forty-five thousand, eight hundred one".