51541200321 has 64 divisors (see below), whose sum is σ = 79691931648. Its totient is φ = 29349347328.

The previous prime is 51541200313. The next prime is 51541200323. The reversal of 51541200321 is 12300214515.

It is a happy number.

It is not a de Polignac number, because 51541200321 - 2³ = 51541200313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51541200291 and 51541200300.

It is not an unprimeable number, because it can be changed into a prime (51541200323) 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 63 ways as a sum of consecutive naturals, for example, 9512005 + ... + 9517421.

It is an arithmetic number, because the mean of its divisors is an integer number (1245186432).

Almost surely, 2^51541200321 is an apocalyptic number.

51541200321 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51541200321 is a deficient number, since it is larger than the sum of its proper divisors (28150731327).

51541200321 is a wasteful number, since it uses less digits than its factorization.

51541200321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5690.

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

Adding to 51541200321 its reverse (12300214515), we get a palindrome (63841414836).

The spelling of 51541200321 in words is "fifty-one billion, five hundred forty-one million, two hundred thousand, three hundred twenty-one".