51297017 has 6 divisors (see below), whose sum is σ = 54139338. Its totient is φ = 48596832.

The previous prime is 51297011. The next prime is 51297023. The reversal of 51297017 is 71079215.

It is an interprime number because it is at equal distance from previous prime (51297011) and next prime (51297023).

It can be written as a sum of positive squares in only one way, i.e., 39075001 + 12222016 = 6251^2 + 3496^2 .

It is not a de Polignac number, because 51297017 - 2⁶ = 51296953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51297011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70688 + ... + 71409.

It is an arithmetic number, because the mean of its divisors is an integer number (9023223).

Almost surely, 2^51297017 is an apocalyptic number.

It is an amenable number.

51297017 is a deficient number, since it is larger than the sum of its proper divisors (2842321).

51297017 is a wasteful number, since it uses less digits than its factorization.

51297017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142135 (or 142116 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 51297017 is about 7162.1935885593. The cubic root of 51297017 is about 371.5614967389.

The spelling of 51297017 in words is "fifty-one million, two hundred ninety-seven thousand, seventeen".