51543122001 has 24 divisors (see below), whose sum is σ = 84647052000. Its totient is φ = 27720669312.

The previous prime is 51543121991. The next prime is 51543122003. The reversal of 51543122001 is 10022134515.

It is a happy number.

It is not a de Polignac number, because 51543122001 - 2⁹ = 51543121489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51543122003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10310251 + ... + 10315248.

It is an arithmetic number, because the mean of its divisors is an integer number (3526960500).

Almost surely, 2^51543122001 is an apocalyptic number.

51543122001 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51543122001 is a deficient number, since it is larger than the sum of its proper divisors (33103929999).

51543122001 is a wasteful number, since it uses less digits than its factorization.

51543122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20625533 (or 20625526 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 51543122001 its reverse (10022134515), we get a palindrome (61565256516).

The spelling of 51543122001 in words is "fifty-one billion, five hundred forty-three million, one hundred twenty-two thousand, one".