49186591 has 2 divisors, whose sum is σ = 49186592. Its totient is φ = 49186590.

The previous prime is 49186549. The next prime is 49186607. The reversal of 49186591 is 19568194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49186591 - 2⁷ = 49186463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49186541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24593295 + 24593296.

It is an arithmetic number, because the mean of its divisors is an integer number (24593296).

Almost surely, 2^49186591 is an apocalyptic number.

49186591 is a deficient number, since it is larger than the sum of its proper divisors (1).

49186591 is an equidigital number, since it uses as much as digits as its factorization.

49186591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 43.

The square root of 49186591 is about 7013.3152645521. The cubic root of 49186591 is about 366.3944680449.

The spelling of 49186591 in words is "forty-nine million, one hundred eighty-six thousand, five hundred ninety-one".