49913257 has 2 divisors, whose sum is σ = 49913258. Its totient is φ = 49913256.

The previous prime is 49913251. The next prime is 49913267. The reversal of 49913257 is 75231994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37161216 + 12752041 = 6096^2 + 3571^2 .

It is a cyclic number.

It is not a de Polignac number, because 49913257 - 2²³ = 41524649 is a prime.

It is not a weakly prime, because it can be changed into another prime (49913251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24956628 + 24956629.

It is an arithmetic number, because the mean of its divisors is an integer number (24956629).

Almost surely, 2^49913257 is an apocalyptic number.

It is an amenable number.

49913257 is a deficient number, since it is larger than the sum of its proper divisors (1).

49913257 is an equidigital number, since it uses as much as digits as its factorization.

49913257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The square root of 49913257 is about 7064.9314929446. The cubic root of 49913257 is about 368.1899839159.

The spelling of 49913257 in words is "forty-nine million, nine hundred thirteen thousand, two hundred fifty-seven".