49995559 has 2 divisors, whose sum is σ = 49995560. Its totient is φ = 49995558.

The previous prime is 49995557. The next prime is 49995563. The reversal of 49995559 is 95559994.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49995559 - 2¹ = 49995557 is a prime.

Together with 49995557, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49995557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24997779 + 24997780.

It is an arithmetic number, because the mean of its divisors is an integer number (24997780).

Almost surely, 2^49995559 is an apocalyptic number.

49995559 is a deficient number, since it is larger than the sum of its proper divisors (1).

49995559 is an equidigital number, since it uses as much as digits as its factorization.

49995559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3280500, while the sum is 55.

The square root of 49995559 is about 7070.7537787707. The cubic root of 49995559 is about 368.3922423518.

The spelling of 49995559 in words is "forty-nine million, nine hundred ninety-five thousand, five hundred fifty-nine".