51727349 has 2 divisors, whose sum is σ = 51727350. Its totient is φ = 51727348.

The previous prime is 51727339. The next prime is 51727397. The reversal of 51727349 is 94372715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47018449 + 4708900 = 6857^2 + 2170^2 .

It is a cyclic number.

It is not a de Polignac number, because 51727349 - 2¹² = 51723253 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51727309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25863674 + 25863675.

It is an arithmetic number, because the mean of its divisors is an integer number (25863675).

Almost surely, 2^51727349 is an apocalyptic number.

It is an amenable number.

51727349 is a deficient number, since it is larger than the sum of its proper divisors (1).

51727349 is an equidigital number, since it uses as much as digits as its factorization.

51727349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 38.

The square root of 51727349 is about 7192.1727593266. The cubic root of 51727349 is about 372.5976177653.

It can be divided in two parts, 5172 and 7349, that added together give a palindrome (12521).

The spelling of 51727349 in words is "fifty-one million, seven hundred twenty-seven thousand, three hundred forty-nine".