51717293 has 2 divisors, whose sum is σ = 51717294. Its totient is φ = 51717292.

The previous prime is 51717287. The next prime is 51717299. The reversal of 51717293 is 39271715.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (51717287) and next prime (51717299).

It can be written as a sum of positive squares in only one way, i.e., 38663524 + 13053769 = 6218^2 + 3613^2 .

It is a cyclic number.

It is not a de Polignac number, because 51717293 - 2⁶ = 51717229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51717299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25858646 + 25858647.

It is an arithmetic number, because the mean of its divisors is an integer number (25858647).

Almost surely, 2^51717293 is an apocalyptic number.

It is an amenable number.

51717293 is a deficient number, since it is larger than the sum of its proper divisors (1).

51717293 is an equidigital number, since it uses as much as digits as its factorization.

51717293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 35.

The square root of 51717293 is about 7191.4736320173. The cubic root of 51717293 is about 372.5734713867.

The spelling of 51717293 in words is "fifty-one million, seven hundred seventeen thousand, two hundred ninety-three".