51244199 has 2 divisors, whose sum is σ = 51244200. Its totient is φ = 51244198.

The previous prime is 51244183. The next prime is 51244217. The reversal of 51244199 is 99144215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51244199 - 2⁴ = 51244183 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51244129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25622099 + 25622100.

It is an arithmetic number, because the mean of its divisors is an integer number (25622100).

Almost surely, 2^51244199 is an apocalyptic number.

51244199 is a deficient number, since it is larger than the sum of its proper divisors (1).

51244199 is an equidigital number, since it uses as much as digits as its factorization.

51244199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The square root of 51244199 is about 7158.5053607579. The cubic root of 51244199 is about 371.4339267825.

The spelling of 51244199 in words is "fifty-one million, two hundred forty-four thousand, one hundred ninety-nine".