51352517 has 2 divisors, whose sum is σ = 51352518. Its totient is φ = 51352516.

The previous prime is 51352489. The next prime is 51352519. The reversal of 51352517 is 71525315.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51351556 + 961 = 7166^2 + 31^2 .

It is a cyclic number.

It is not a de Polignac number, because 51352517 - 2⁶ = 51352453 is a prime.

Together with 51352519, it forms a pair of twin primes.

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 51352517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51352519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25676258 + 25676259.

It is an arithmetic number, because the mean of its divisors is an integer number (25676259).

Almost surely, 2^51352517 is an apocalyptic number.

It is an amenable number.

51352517 is a deficient number, since it is larger than the sum of its proper divisors (1).

51352517 is an equidigital number, since it uses as much as digits as its factorization.

51352517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5250, while the sum is 29.

The square root of 51352517 is about 7166.0670524354. The cubic root of 51352517 is about 371.6954501449.

The spelling of 51352517 in words is "fifty-one million, three hundred fifty-two thousand, five hundred seventeen".