53421822481 has 4 divisors (see below), whose sum is σ = 53423421364. Its totient is φ = 53420223600.

The previous prime is 53421822463. The next prime is 53421822497. The reversal of 53421822481 is 18422812435.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8219235600 + 45202586881 = 90660^2 + 212609^2 .

It is a cyclic number.

It is not a de Polignac number, because 53421822481 - 2⁵ = 53421822449 is a prime.

It is a super-2 number, since 2×53421822481² (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 (53421829481) 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, 748230 + ... + 816511.

It is an arithmetic number, because the mean of its divisors is an integer number (13355855341).

Almost surely, 2^53421822481 is an apocalyptic number.

It is an amenable number.

53421822481 is a deficient number, since it is larger than the sum of its proper divisors (1598883).

53421822481 is a wasteful number, since it uses less digits than its factorization.

53421822481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598882.

The product of its digits is 122880, while the sum is 40.

The spelling of 53421822481 in words is "fifty-three billion, four hundred twenty-one million, eight hundred twenty-two thousand, four hundred eighty-one".