51199373 has 2 divisors, whose sum is σ = 51199374. Its totient is φ = 51199372.

The previous prime is 51199367. The next prime is 51199397. The reversal of 51199373 is 37399115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45333289 + 5866084 = 6733^2 + 2422^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51199373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51199303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25599686 + 25599687.

It is an arithmetic number, because the mean of its divisors is an integer number (25599687).

Almost surely, 2^51199373 is an apocalyptic number.

It is an amenable number.

51199373 is a deficient number, since it is larger than the sum of its proper divisors (1).

51199373 is an equidigital number, since it uses as much as digits as its factorization.

51199373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25515, while the sum is 38.

The square root of 51199373 is about 7155.3737149083. The cubic root of 51199373 is about 371.3255909140.

The spelling of 51199373 in words is "fifty-one million, one hundred ninety-nine thousand, three hundred seventy-three".