51262291 has 2 divisors, whose sum is σ = 51262292. Its totient is φ = 51262290.

The previous prime is 51262273. The next prime is 51262319. The reversal of 51262291 is 19226215.

51262291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (51262319) can be obtained adding 51262291 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51262291 - 2⁷ = 51262163 is a prime.

It is not a weakly prime, because it can be changed into another prime (51262261) 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, 25631145 + 25631146.

It is an arithmetic number, because the mean of its divisors is an integer number (25631146).

Almost surely, 2^51262291 is an apocalyptic number.

51262291 is a deficient number, since it is larger than the sum of its proper divisors (1).

51262291 is an equidigital number, since it uses as much as digits as its factorization.

51262291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 28.

The square root of 51262291 is about 7159.7689208521. The cubic root of 51262291 is about 371.4776337909.

The spelling of 51262291 in words is "fifty-one million, two hundred sixty-two thousand, two hundred ninety-one".