51235543 has 2 divisors, whose sum is σ = 51235544. Its totient is φ = 51235542.

The previous prime is 51235519. The next prime is 51235549. The reversal of 51235543 is 34553215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51235543 - 2⁵ = 51235511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51235549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25617771 + 25617772.

It is an arithmetic number, because the mean of its divisors is an integer number (25617772).

Almost surely, 2^51235543 is an apocalyptic number.

51235543 is a deficient number, since it is larger than the sum of its proper divisors (1).

51235543 is an equidigital number, since it uses as much as digits as its factorization.

51235543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 28.

The square root of 51235543 is about 7157.9007397421. The cubic root of 51235543 is about 371.4130118095.

Adding to 51235543 its reverse (34553215), we get a palindrome (85788758).

The spelling of 51235543 in words is "fifty-one million, two hundred thirty-five thousand, five hundred forty-three".