51635117 has 2 divisors, whose sum is σ = 51635118. Its totient is φ = 51635116.

The previous prime is 51635099. The next prime is 51635147. The reversal of 51635117 is 71153615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49477156 + 2157961 = 7034^2 + 1469^2 .

It is a cyclic number.

It is not a de Polignac number, because 51635117 - 2⁸ = 51634861 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51635117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51635147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25817558 + 25817559.

It is an arithmetic number, because the mean of its divisors is an integer number (25817559).

Almost surely, 2^51635117 is an apocalyptic number.

It is an amenable number.

51635117 is a deficient number, since it is larger than the sum of its proper divisors (1).

51635117 is an equidigital number, since it uses as much as digits as its factorization.

51635117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3150, while the sum is 29.

The square root of 51635117 is about 7185.7579280129. The cubic root of 51635117 is about 372.3760337007.

The spelling of 51635117 in words is "fifty-one million, six hundred thirty-five thousand, one hundred seventeen".