53221513423 has 4 divisors (see below), whose sum is σ = 57315476008. Its totient is φ = 49127550840.

The previous prime is 53221513381. The next prime is 53221513427. The reversal of 53221513423 is 32431512235.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53221513423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53221513427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2046981273 + ... + 2046981298.

It is an arithmetic number, because the mean of its divisors is an integer number (14328869002).

Almost surely, 2^53221513423 is an apocalyptic number.

53221513423 is a deficient number, since it is larger than the sum of its proper divisors (4093962585).

53221513423 is a wasteful number, since it uses less digits than its factorization.

53221513423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4093962584.

The product of its digits is 21600, while the sum is 31.

The spelling of 53221513423 in words is "fifty-three billion, two hundred twenty-one million, five hundred thirteen thousand, four hundred twenty-three".