51738517 has 2 divisors, whose sum is σ = 51738518. Its totient is φ = 51738516.

The previous prime is 51738451. The next prime is 51738527. The reversal of 51738517 is 71583715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50893956 + 844561 = 7134^2 + 919^2 .

It is a cyclic number.

It is not a de Polignac number, because 51738517 - 2⁷ = 51738389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51738527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25869258 + 25869259.

It is an arithmetic number, because the mean of its divisors is an integer number (25869259).

Almost surely, 2^51738517 is an apocalyptic number.

It is an amenable number.

51738517 is a deficient number, since it is larger than the sum of its proper divisors (1).

51738517 is an equidigital number, since it uses as much as digits as its factorization.

51738517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 37.

The square root of 51738517 is about 7192.9491170173. The cubic root of 51738517 is about 372.6244306013.

The spelling of 51738517 in words is "fifty-one million, seven hundred thirty-eight thousand, five hundred seventeen".