91455501 has 16 divisors (see below), whose sum is σ = 123206400. Its totient is φ = 60341568.

The previous prime is 91455491. The next prime is 91455517. The reversal of 91455501 is 10555419.

It is not a de Polignac number, because 91455501 - 2⁶ = 91455437 is a prime.

It is a super-2 number, since 2×91455501² = 16728217326322002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91455401) 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 15 ways as a sum of consecutive naturals, for example, 163915 + ... + 164471.

It is an arithmetic number, because the mean of its divisors is an integer number (7700400).

Almost surely, 2^91455501 is an apocalyptic number.

It is an amenable number.

91455501 is a deficient number, since it is larger than the sum of its proper divisors (31750899).

91455501 is a wasteful number, since it uses less digits than its factorization.

91455501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 91455501 is about 9563.2369519949. The cubic root of 91455501 is about 450.5433781708.

The spelling of 91455501 in words is "ninety-one million, four hundred fifty-five thousand, five hundred one".