91516049 has 16 divisors (see below), whose sum is σ = 99429120. Its totient is φ = 83915520.

The previous prime is 91516039. The next prime is 91516063. The reversal of 91516049 is 94061519.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91516049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91516039) 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, 111059 + ... + 111879.

It is an arithmetic number, because the mean of its divisors is an integer number (6214320).

Almost surely, 2^91516049 is an apocalyptic number.

It is an amenable number.

91516049 is a deficient number, since it is larger than the sum of its proper divisors (7913071).

91516049 is a wasteful number, since it uses less digits than its factorization.

91516049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 91516049 is about 9566.4020927410. The cubic root of 91516049 is about 450.6427834636.

The spelling of 91516049 in words is "ninety-one million, five hundred sixteen thousand, forty-nine".