49165591 has 2 divisors, whose sum is σ = 49165592. Its totient is φ = 49165590.

The previous prime is 49165577. The next prime is 49165603. The reversal of 49165591 is 19556194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49165591 - 2¹⁵ = 49132823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49165511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24582795 + 24582796.

It is an arithmetic number, because the mean of its divisors is an integer number (24582796).

Almost surely, 2^49165591 is an apocalyptic number.

49165591 is a deficient number, since it is larger than the sum of its proper divisors (1).

49165591 is an equidigital number, since it uses as much as digits as its factorization.

49165591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 40.

The square root of 49165591 is about 7011.8179525712. The cubic root of 49165591 is about 366.3423171169.

The spelling of 49165591 in words is "forty-nine million, one hundred sixty-five thousand, five hundred ninety-one".