51352231129 has 6 divisors (see below), whose sum is σ = 51935713550. Its totient is φ = 50775231936.

The previous prime is 51352231127. The next prime is 51352231157. The reversal of 51352231129 is 92113225315.

It can be written as a sum of positive squares in 3 ways, for example, as 207504025 + 51144727104 = 14405^2 + 226152^2 .

It is not a de Polignac number, because 51352231129 - 2¹ = 51352231127 is a prime.

It is a super-2 number, since 2×51352231129² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51352231094 and 51352231103.

It is not an unprimeable number, because it can be changed into a prime (51352231127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3233604 + ... + 3249445.

Almost surely, 2^51352231129 is an apocalyptic number.

It is an amenable number.

51352231129 is a deficient number, since it is larger than the sum of its proper divisors (583482421).

51352231129 is an frugal number, since it uses more digits than its factorization.

51352231129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6483227 (or 6483138 counting only the distinct ones).

The product of its digits is 16200, while the sum is 34.

The spelling of 51352231129 in words is "fifty-one billion, three hundred fifty-two million, two hundred thirty-one thousand, one hundred twenty-nine".