51930929 has 2 divisors, whose sum is σ = 51930930. Its totient is φ = 51930928.

The previous prime is 51930881. The next prime is 51930953. The reversal of 51930929 is 92903915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38440000 + 13490929 = 6200^2 + 3673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51930929 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51930892 and 51930901.

It is not a weakly prime, because it can be changed into another prime (51935929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25965464 + 25965465.

It is an arithmetic number, because the mean of its divisors is an integer number (25965465).

Almost surely, 2^51930929 is an apocalyptic number.

It is an amenable number.

51930929 is a deficient number, since it is larger than the sum of its proper divisors (1).

51930929 is an equidigital number, since it uses as much as digits as its factorization.

51930929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 51930929 is about 7206.3117473504. The cubic root of 51930929 is about 373.0857807392.

The spelling of 51930929 in words is "fifty-one million, nine hundred thirty thousand, nine hundred twenty-nine".