51983251 has 2 divisors, whose sum is σ = 51983252. Its totient is φ = 51983250.

The previous prime is 51983231. The next prime is 51983273. The reversal of 51983251 is 15238915.

51983251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51983251 - 2⁷ = 51983123 is a prime.

It is not a weakly prime, because it can be changed into another prime (51983231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25991625 + 25991626.

It is an arithmetic number, because the mean of its divisors is an integer number (25991626).

Almost surely, 2^51983251 is an apocalyptic number.

51983251 is a deficient number, since it is larger than the sum of its proper divisors (1).

51983251 is an equidigital number, since it uses as much as digits as its factorization.

51983251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 34.

The square root of 51983251 is about 7209.9411231993. The cubic root of 51983251 is about 373.2110371288.

The spelling of 51983251 in words is "fifty-one million, nine hundred eighty-three thousand, two hundred fifty-one".