51199349 has 2 divisors, whose sum is σ = 51199350. Its totient is φ = 51199348.

The previous prime is 51199327. The next prime is 51199363. The reversal of 51199349 is 94399115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35343025 + 15856324 = 5945^2 + 3982^2 .

It is a cyclic number.

It is not a de Polignac number, because 51199349 - 2²⁴ = 34422133 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 (51199249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25599674 + 25599675.

It is an arithmetic number, because the mean of its divisors is an integer number (25599675).

Almost surely, 2^51199349 is an apocalyptic number.

It is an amenable number.

51199349 is a deficient number, since it is larger than the sum of its proper divisors (1).

51199349 is an equidigital number, since it uses as much as digits as its factorization.

51199349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 41.

The square root of 51199349 is about 7155.3720378468. The cubic root of 51199349 is about 371.3255328936.

The spelling of 51199349 in words is "fifty-one million, one hundred ninety-nine thousand, three hundred forty-nine".