49977757 has 2 divisors, whose sum is σ = 49977758. Its totient is φ = 49977756.

The previous prime is 49977751. The next prime is 49977761. The reversal of 49977757 is 75777994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42693156 + 7284601 = 6534^2 + 2699^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49977757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49977698 and 49977707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49977751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24988878 + 24988879.

It is an arithmetic number, because the mean of its divisors is an integer number (24988879).

Almost surely, 2^49977757 is an apocalyptic number.

It is an amenable number.

49977757 is a deficient number, since it is larger than the sum of its proper divisors (1).

49977757 is an equidigital number, since it uses as much as digits as its factorization.

49977757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3889620, while the sum is 55.

The square root of 49977757 is about 7069.4948192923. The cubic root of 49977757 is about 368.3485124862.

The spelling of 49977757 in words is "forty-nine million, nine hundred seventy-seven thousand, seven hundred fifty-seven".