51552143231 has 2 divisors, whose sum is σ = 51552143232. Its totient is φ = 51552143230.

The previous prime is 51552143183. The next prime is 51552143257. The reversal of 51552143231 is 13234125515.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51552143231 is a prime.

It is a super-2 number, since 2×51552143231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51552143831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25776071615 + 25776071616.

It is an arithmetic number, because the mean of its divisors is an integer number (25776071616).

Almost surely, 2^51552143231 is an apocalyptic number.

51552143231 is a deficient number, since it is larger than the sum of its proper divisors (1).

51552143231 is an equidigital number, since it uses as much as digits as its factorization.

51552143231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 32.

Adding to 51552143231 its reverse (13234125515), we get a palindrome (64786268746).

The spelling of 51552143231 in words is "fifty-one billion, five hundred fifty-two million, one hundred forty-three thousand, two hundred thirty-one".