49971599 has 2 divisors, whose sum is σ = 49971600. Its totient is φ = 49971598.

The previous prime is 49971533. The next prime is 49971613. The reversal of 49971599 is 99517994.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49971599 - 2²⁰ = 48923023 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49971599.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49971499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24985799 + 24985800.

It is an arithmetic number, because the mean of its divisors is an integer number (24985800).

Almost surely, 2^49971599 is an apocalyptic number.

49971599 is a deficient number, since it is larger than the sum of its proper divisors (1).

49971599 is an equidigital number, since it uses as much as digits as its factorization.

49971599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 53.

The square root of 49971599 is about 7069.0592726331. The cubic root of 49971599 is about 368.3333832004. Note that the first 4 decimals are identical.

The spelling of 49971599 in words is "forty-nine million, nine hundred seventy-one thousand, five hundred ninety-nine".