51905933 has 2 divisors, whose sum is σ = 51905934. Its totient is φ = 51905932.

The previous prime is 51905881. The next prime is 51905939. The reversal of 51905933 is 33950915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42159049 + 9746884 = 6493^2 + 3122^2 .

It is a cyclic number.

It is not a de Polignac number, because 51905933 - 2⁶ = 51905869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51905893 and 51905902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51905939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25952966 + 25952967.

It is an arithmetic number, because the mean of its divisors is an integer number (25952967).

Almost surely, 2^51905933 is an apocalyptic number.

It is an amenable number.

51905933 is a deficient number, since it is larger than the sum of its proper divisors (1).

51905933 is an equidigital number, since it uses as much as digits as its factorization.

51905933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18225, while the sum is 35.

The square root of 51905933 is about 7204.5772256254. The cubic root of 51905933 is about 373.0259118005.

The spelling of 51905933 in words is "fifty-one million, nine hundred five thousand, nine hundred thirty-three".