51610217 has 2 divisors, whose sum is σ = 51610218. Its totient is φ = 51610216.

The previous prime is 51610211. The next prime is 51610231. The reversal of 51610217 is 71201615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51609856 + 361 = 7184^2 + 19^2 .

It is a cyclic number.

It is not a de Polignac number, because 51610217 - 2¹⁰ = 51609193 is a prime.

It is a super-2 number, since 2×51610217² = 5327228997574178, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51610192 and 51610201.

It is not a weakly prime, because it can be changed into another prime (51610211) 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, 25805108 + 25805109.

It is an arithmetic number, because the mean of its divisors is an integer number (25805109).

Almost surely, 2^51610217 is an apocalyptic number.

It is an amenable number.

51610217 is a deficient number, since it is larger than the sum of its proper divisors (1).

51610217 is an equidigital number, since it uses as much as digits as its factorization.

51610217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 51610217 is about 7184.0251252345. The cubic root of 51610217 is about 372.3161671176.

The spelling of 51610217 in words is "fifty-one million, six hundred ten thousand, two hundred seventeen".