51653243 has 2 divisors, whose sum is σ = 51653244. Its totient is φ = 51653242.

The previous prime is 51653227. The next prime is 51653249. The reversal of 51653243 is 34235615.

51653243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51653243 - 2⁴ = 51653227 is a prime.

It is not a weakly prime, because it can be changed into another prime (51653249) 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, 25826621 + 25826622.

It is an arithmetic number, because the mean of its divisors is an integer number (25826622).

Almost surely, 2^51653243 is an apocalyptic number.

51653243 is a deficient number, since it is larger than the sum of its proper divisors (1).

51653243 is an equidigital number, since it uses as much as digits as its factorization.

51653243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 29.

The square root of 51653243 is about 7187.0190621704. The cubic root of 51653243 is about 372.4196015846.

Adding to 51653243 its reverse (34235615), we get a palindrome (85888858).

The spelling of 51653243 in words is "fifty-one million, six hundred fifty-three thousand, two hundred forty-three".