91084541 has 6 divisors (see below), whose sum is σ = 94118526. Its totient is φ = 88145400.

The previous prime is 91084519. The next prime is 91084547. The reversal of 91084541 is 14548019.

It can be written as a sum of positive squares in only one way, i.e., 67996516 + 23088025 = 8246^2 + 4805^2 .

It is a de Polignac number, because none of the positive numbers 2^k-91084541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91084498 and 91084507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91084547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46430 + ... + 48351.

It is an arithmetic number, because the mean of its divisors is an integer number (15686421).

Almost surely, 2^91084541 is an apocalyptic number.

It is an amenable number.

91084541 is a deficient number, since it is larger than the sum of its proper divisors (3033985).

91084541 is an equidigital number, since it uses as much as digits as its factorization.

91084541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94843 (or 94812 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 91084541 is about 9543.8221379068. The cubic root of 91084541 is about 449.9333909641.

The spelling of 91084541 in words is "ninety-one million, eighty-four thousand, five hundred forty-one".