49851289 has 2 divisors, whose sum is σ = 49851290. Its totient is φ = 49851288.

The previous prime is 49851287. The next prime is 49851331. The reversal of 49851289 is 98215894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47265625 + 2585664 = 6875^2 + 1608^2 .

It is a cyclic number.

It is not a de Polignac number, because 49851289 - 2¹ = 49851287 is a prime.

Together with 49851287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (49851287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24925644 + 24925645.

It is an arithmetic number, because the mean of its divisors is an integer number (24925645).

Almost surely, 2^49851289 is an apocalyptic number.

It is an amenable number.

49851289 is a deficient number, since it is larger than the sum of its proper divisors (1).

49851289 is an equidigital number, since it uses as much as digits as its factorization.

49851289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 46.

The square root of 49851289 is about 7060.5445257430. The cubic root of 49851289 is about 368.0375498270.

The spelling of 49851289 in words is "forty-nine million, eight hundred fifty-one thousand, two hundred eighty-nine".