51524330421 has 16 divisors (see below), whose sum is σ = 71075986560. Its totient is φ = 33161378880.

The previous prime is 51524330393. The next prime is 51524330423. The reversal of 51524330421 is 12403342515.

It is not a de Polignac number, because 51524330421 - 2⁷ = 51524330293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51524330423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 899911 + ... + 955451.

It is an arithmetic number, because the mean of its divisors is an integer number (4442249160).

Almost surely, 2^51524330421 is an apocalyptic number.

It is an amenable number.

51524330421 is a deficient number, since it is larger than the sum of its proper divisors (19551656139).

51524330421 is a wasteful number, since it uses less digits than its factorization.

51524330421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66236.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 51524330421 its reverse (12403342515), we get a palindrome (63927672936).

The spelling of 51524330421 in words is "fifty-one billion, five hundred twenty-four million, three hundred thirty thousand, four hundred twenty-one".