51227413 has 2 divisors, whose sum is σ = 51227414. Its totient is φ = 51227412.

The previous prime is 51227387. The next prime is 51227431. The reversal of 51227413 is 31472215.

It is a happy number.

51227413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (51227431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48344209 + 2883204 = 6953^2 + 1698^2 .

It is a cyclic number.

It is not a de Polignac number, because 51227413 - 2⁵ = 51227381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51227513) 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, 25613706 + 25613707.

It is an arithmetic number, because the mean of its divisors is an integer number (25613707).

Almost surely, 2^51227413 is an apocalyptic number.

It is an amenable number.

51227413 is a deficient number, since it is larger than the sum of its proper divisors (1).

51227413 is an equidigital number, since it uses as much as digits as its factorization.

51227413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 25.

The square root of 51227413 is about 7157.3328132762. The cubic root of 51227413 is about 371.3933656333.

Adding to 51227413 its reverse (31472215), we get a palindrome (82699628).

The spelling of 51227413 in words is "fifty-one million, two hundred twenty-seven thousand, four hundred thirteen".