51960869 has 2 divisors, whose sum is σ = 51960870. Its totient is φ = 51960868.

The previous prime is 51960809. The next prime is 51960901. The reversal of 51960869 is 96806915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42120100 + 9840769 = 6490^2 + 3137^2 .

It is a cyclic number.

It is not a de Polignac number, because 51960869 - 2⁸ = 51960613 is a prime.

It is a super-2 number, since 2×51960869² = 5399863814470322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51960809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25980434 + 25980435.

It is an arithmetic number, because the mean of its divisors is an integer number (25980435).

Almost surely, 2^51960869 is an apocalyptic number.

It is an amenable number.

51960869 is a deficient number, since it is larger than the sum of its proper divisors (1).

51960869 is an equidigital number, since it uses as much as digits as its factorization.

51960869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 51960869 is about 7208.3887936209. The cubic root of 51960869 is about 373.1574659726.

The spelling of 51960869 in words is "fifty-one million, nine hundred sixty thousand, eight hundred sixty-nine".