49715891 has 2 divisors, whose sum is σ = 49715892. Its totient is φ = 49715890.

The previous prime is 49715873. The next prime is 49715893. The reversal of 49715891 is 19851794.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49715891 - 2¹⁰ = 49714867 is a prime.

Together with 49715893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49715893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24857945 + 24857946.

It is an arithmetic number, because the mean of its divisors is an integer number (24857946).

Almost surely, 2^49715891 is an apocalyptic number.

49715891 is a deficient number, since it is larger than the sum of its proper divisors (1).

49715891 is an equidigital number, since it uses as much as digits as its factorization.

49715891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 44.

The square root of 49715891 is about 7050.9496523518. The cubic root of 49715891 is about 367.7040463733.

The spelling of 49715891 in words is "forty-nine million, seven hundred fifteen thousand, eight hundred ninety-one".