51929417 has 2 divisors, whose sum is σ = 51929418. Its totient is φ = 51929416.

The previous prime is 51929393. The next prime is 51929429. The reversal of 51929417 is 71492915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27762361 + 24167056 = 5269^2 + 4916^2 .

It is a cyclic number.

It is not a de Polignac number, because 51929417 - 2⁸ = 51929161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51929447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25964708 + 25964709.

It is an arithmetic number, because the mean of its divisors is an integer number (25964709).

Almost surely, 2^51929417 is an apocalyptic number.

It is an amenable number.

51929417 is a deficient number, since it is larger than the sum of its proper divisors (1).

51929417 is an equidigital number, since it uses as much as digits as its factorization.

51929417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 38.

The square root of 51929417 is about 7206.2068385524. The cubic root of 51929417 is about 373.0821598323.

The spelling of 51929417 in words is "fifty-one million, nine hundred twenty-nine thousand, four hundred seventeen".