49251869 has 2 divisors, whose sum is σ = 49251870. Its totient is φ = 49251868.

The previous prime is 49251793. The next prime is 49251877. The reversal of 49251869 is 96815294.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48372025 + 879844 = 6955^2 + 938^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49251869 is a prime.

It is a super-2 number, since 2×49251869² = 4851493199986322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49254869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24625934 + 24625935.

It is an arithmetic number, because the mean of its divisors is an integer number (24625935).

Almost surely, 2^49251869 is an apocalyptic number.

It is an amenable number.

49251869 is a deficient number, since it is larger than the sum of its proper divisors (1).

49251869 is an equidigital number, since it uses as much as digits as its factorization.

49251869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 44.

The square root of 49251869 is about 7017.9675832822. The cubic root of 49251869 is about 366.5564832384.

The spelling of 49251869 in words is "forty-nine million, two hundred fifty-one thousand, eight hundred sixty-nine".