51314749 has 2 divisors, whose sum is σ = 51314750. Its totient is φ = 51314748.

The previous prime is 51314677. The next prime is 51314773. The reversal of 51314749 is 94741315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32695524 + 18619225 = 5718^2 + 4315^2 .

It is a cyclic number.

It is not a de Polignac number, because 51314749 - 2⁷ = 51314621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51314149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25657374 + 25657375.

It is an arithmetic number, because the mean of its divisors is an integer number (25657375).

Almost surely, 2^51314749 is an apocalyptic number.

It is an amenable number.

51314749 is a deficient number, since it is larger than the sum of its proper divisors (1).

51314749 is an equidigital number, since it uses as much as digits as its factorization.

51314749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 51314749 is about 7163.4313705095. The cubic root of 51314749 is about 371.6043047475.

The spelling of 51314749 in words is "fifty-one million, three hundred fourteen thousand, seven hundred forty-nine".