49913251 has 2 divisors, whose sum is σ = 49913252. Its totient is φ = 49913250.

The previous prime is 49913231. The next prime is 49913257. The reversal of 49913251 is 15231994.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49913251 - 2⁹ = 49912739 is a prime.

It is not a weakly prime, because it can be changed into another prime (49913257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24956625 + 24956626.

It is an arithmetic number, because the mean of its divisors is an integer number (24956626).

Almost surely, 2^49913251 is an apocalyptic number.

49913251 is a deficient number, since it is larger than the sum of its proper divisors (1).

49913251 is an equidigital number, since it uses as much as digits as its factorization.

49913251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 34.

The square root of 49913251 is about 7064.9310683120. The cubic root of 49913251 is about 368.1899691627.

The spelling of 49913251 in words is "forty-nine million, nine hundred thirteen thousand, two hundred fifty-one".