51301697 has 2 divisors, whose sum is σ = 51301698. Its totient is φ = 51301696.

The previous prime is 51301693. The next prime is 51301711. The reversal of 51301697 is 79610315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28558336 + 22743361 = 5344^2 + 4769^2 .

It is a cyclic number.

It is not a de Polignac number, because 51301697 - 2² = 51301693 is a prime.

It is not a weakly prime, because it can be changed into another prime (51301693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25650848 + 25650849.

It is an arithmetic number, because the mean of its divisors is an integer number (25650849).

Almost surely, 2^51301697 is an apocalyptic number.

It is an amenable number.

51301697 is a deficient number, since it is larger than the sum of its proper divisors (1).

51301697 is an equidigital number, since it uses as much as digits as its factorization.

51301697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 51301697 is about 7162.5202966554. The cubic root of 51301697 is about 371.5727959984.

The spelling of 51301697 in words is "fifty-one million, three hundred one thousand, six hundred ninety-seven".