49997771 has 2 divisors, whose sum is σ = 49997772. Its totient is φ = 49997770.

The previous prime is 49997747. The next prime is 49997803. The reversal of 49997771 is 17779994.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49997771 is a prime.

It is not a weakly prime, because it can be changed into another prime (49997071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24998885 + 24998886.

It is an arithmetic number, because the mean of its divisors is an integer number (24998886).

Almost surely, 2^49997771 is an apocalyptic number.

49997771 is a deficient number, since it is larger than the sum of its proper divisors (1).

49997771 is an equidigital number, since it uses as much as digits as its factorization.

49997771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1000188, while the sum is 53.

The square root of 49997771 is about 7070.9101960073. The cubic root of 49997771 is about 368.3976753119.

The spelling of 49997771 in words is "forty-nine million, nine hundred ninety-seven thousand, seven hundred seventy-one".