51506053 has 2 divisors, whose sum is σ = 51506054. Its totient is φ = 51506052.

The previous prime is 51506051. The next prime is 51506057. The reversal of 51506053 is 35060515.

51506053 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., 27857284 + 23648769 = 5278^2 + 4863^2 .

It is a cyclic number.

It is not a de Polignac number, because 51506053 - 2¹ = 51506051 is a prime.

Together with 51506051, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51506051) 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, 25753026 + 25753027.

It is an arithmetic number, because the mean of its divisors is an integer number (25753027).

Almost surely, 2^51506053 is an apocalyptic number.

It is an amenable number.

51506053 is a deficient number, since it is larger than the sum of its proper divisors (1).

51506053 is an equidigital number, since it uses as much as digits as its factorization.

51506053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 51506053 is about 7176.7717673060. The cubic root of 51506053 is about 372.0655186753.

Adding to 51506053 its reverse (35060515), we get a palindrome (86566568).

The spelling of 51506053 in words is "fifty-one million, five hundred six thousand, fifty-three".