51555024441 has 12 divisors (see below), whose sum is σ = 78387756720. Its totient is φ = 32561067960.

The previous prime is 51555024431. The next prime is 51555024463. The reversal of 51555024441 is 14442055515.

It is not a de Polignac number, because 51555024441 - 2⁹ = 51555023929 is a prime.

It is a super-2 number, since 2×51555024441² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51555024396 and 51555024405.

It is not an unprimeable number, because it can be changed into a prime (51555024421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150745515 + ... + 150745856.

It is an arithmetic number, because the mean of its divisors is an integer number (6532313060).

Almost surely, 2^51555024441 is an apocalyptic number.

It is an amenable number.

51555024441 is a deficient number, since it is larger than the sum of its proper divisors (26832732279).

51555024441 is a wasteful number, since it uses less digits than its factorization.

51555024441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301491396 (or 301491393 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

Adding to 51555024441 its reverse (14442055515), we get a palindrome (65997079956).

The spelling of 51555024441 in words is "fifty-one billion, five hundred fifty-five million, twenty-four thousand, four hundred forty-one".