51526121 has 2 divisors, whose sum is σ = 51526122. Its totient is φ = 51526120.

The previous prime is 51526117. The next prime is 51526129. The reversal of 51526121 is 12162515.

It is a happy number.

51526121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37650496 + 13875625 = 6136^2 + 3725^2 .

It is a cyclic number.

It is not a de Polignac number, because 51526121 - 2² = 51526117 is a prime.

It is a super-2 number, since 2×51526121² = 5309882290613282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51526129) 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, 25763060 + 25763061.

It is an arithmetic number, because the mean of its divisors is an integer number (25763061).

Almost surely, 2^51526121 is an apocalyptic number.

It is an amenable number.

51526121 is a deficient number, since it is larger than the sum of its proper divisors (1).

51526121 is an equidigital number, since it uses as much as digits as its factorization.

51526121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 23.

The square root of 51526121 is about 7178.1697527991. The cubic root of 51526121 is about 372.1138342995.

Adding to 51526121 its reverse (12162515), we get a palindrome (63688636).

The spelling of 51526121 in words is "fifty-one million, five hundred twenty-six thousand, one hundred twenty-one".