51512255153 has 2 divisors, whose sum is σ = 51512255154. Its totient is φ = 51512255152.

The previous prime is 51512255131. The next prime is 51512255167. The reversal of 51512255153 is 35155221515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49464873649 + 2047381504 = 222407^2 + 45248^2 .

It is a cyclic number.

It is not a de Polignac number, because 51512255153 - 2²⁰ = 51511206577 is a prime.

It is not a weakly prime, because it can be changed into another prime (51512255183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25756127576 + 25756127577.

It is an arithmetic number, because the mean of its divisors is an integer number (25756127577).

Almost surely, 2^51512255153 is an apocalyptic number.

It is an amenable number.

51512255153 is a deficient number, since it is larger than the sum of its proper divisors (1).

51512255153 is an equidigital number, since it uses as much as digits as its factorization.

51512255153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37500, while the sum is 35.

Adding to 51512255153 its reverse (35155221515), we get a palindrome (86667476668).

The spelling of 51512255153 in words is "fifty-one billion, five hundred twelve million, two hundred fifty-five thousand, one hundred fifty-three".