49445251 has 2 divisors, whose sum is σ = 49445252. Its totient is φ = 49445250.

The previous prime is 49445233. The next prime is 49445267. The reversal of 49445251 is 15254494.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49445251 is a prime.

It is not a weakly prime, because it can be changed into another prime (49445281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24722625 + 24722626.

It is an arithmetic number, because the mean of its divisors is an integer number (24722626).

Almost surely, 2^49445251 is an apocalyptic number.

49445251 is a deficient number, since it is larger than the sum of its proper divisors (1).

49445251 is an equidigital number, since it uses as much as digits as its factorization.

49445251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 34.

The square root of 49445251 is about 7031.7317212761. The cubic root of 49445251 is about 367.0356045018.

The spelling of 49445251 in words is "forty-nine million, four hundred forty-five thousand, two hundred fifty-one".