51826729 has 2 divisors, whose sum is σ = 51826730. Its totient is φ = 51826728.

The previous prime is 51826681. The next prime is 51826763. The reversal of 51826729 is 92762815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40449600 + 11377129 = 6360^2 + 3373^2 .

It is a cyclic number.

It is not a de Polignac number, because 51826729 - 2¹⁵ = 51793961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51826691 and 51826700.

It is not a weakly prime, because it can be changed into another prime (51856729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25913364 + 25913365.

It is an arithmetic number, because the mean of its divisors is an integer number (25913365).

Almost surely, 2^51826729 is an apocalyptic number.

It is an amenable number.

51826729 is a deficient number, since it is larger than the sum of its proper divisors (1).

51826729 is an equidigital number, since it uses as much as digits as its factorization.

51826729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 51826729 is about 7199.0783437882. The cubic root of 51826729 is about 372.8360800340.

It can be divided in two parts, 5182 and 6729, that added together give a palindrome (11911).

The spelling of 51826729 in words is "fifty-one million, eight hundred twenty-six thousand, seven hundred twenty-nine".