49518257 has 2 divisors, whose sum is σ = 49518258. Its totient is φ = 49518256.

The previous prime is 49518251. The next prime is 49518281. The reversal of 49518257 is 75281594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32535616 + 16982641 = 5704^2 + 4121^2 .

It is a cyclic number.

It is not a de Polignac number, because 49518257 - 2¹⁰ = 49517233 is a prime.

It is not a weakly prime, because it can be changed into another prime (49518251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24759128 + 24759129.

It is an arithmetic number, because the mean of its divisors is an integer number (24759129).

Almost surely, 2^49518257 is an apocalyptic number.

It is an amenable number.

49518257 is a deficient number, since it is larger than the sum of its proper divisors (1).

49518257 is an equidigital number, since it uses as much as digits as its factorization.

49518257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 41.

The square root of 49518257 is about 7036.9209886143. The cubic root of 49518257 is about 367.2161585732.

The spelling of 49518257 in words is "forty-nine million, five hundred eighteen thousand, two hundred fifty-seven".