51254404331 has 6 divisors (see below), whose sum is σ = 55500331500. Its totient is φ = 47311757688.

The previous prime is 51254404319. The next prime is 51254404363. The reversal of 51254404331 is 13340445215.

51254404331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51254404331 - 2¹⁸ = 51254142187 is a prime.

It is a super-2 number, since 2×51254404331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51254404381) 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, 151640081 + ... + 151640418.

It is an arithmetic number, because the mean of its divisors is an integer number (9250055250).

Almost surely, 2^51254404331 is an apocalyptic number.

51254404331 is a deficient number, since it is larger than the sum of its proper divisors (4245927169).

51254404331 is a wasteful number, since it uses less digits than its factorization.

51254404331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303280525 (or 303280512 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 51254404331 its reverse (13340445215), we get a palindrome (64594849546).

The spelling of 51254404331 in words is "fifty-one billion, two hundred fifty-four million, four hundred four thousand, three hundred thirty-one".