53143321 has 12 divisors (see below), whose sum is σ = 66759616. Its totient is φ = 41409720.

The previous prime is 53143319. The next prime is 53143333. The reversal of 53143321 is 12334135.

It is not a de Polignac number, because 53143321 - 2¹ = 53143319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53143292 and 53143301.

It is not an unprimeable number, because it can be changed into a prime (53141321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30525 + ... + 32218.

Almost surely, 2^53143321 is an apocalyptic number.

It is an amenable number.

53143321 is a deficient number, since it is larger than the sum of its proper divisors (13616295).

53143321 is a wasteful number, since it uses less digits than its factorization.

53143321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62772 (or 62761 counting only the distinct ones).

The product of its digits is 1080, while the sum is 22.

The square root of 53143321 is about 7289.9465704489. The cubic root of 53143321 is about 375.9668584981.

Adding to 53143321 its reverse (12334135), we get a palindrome (65477456).

The spelling of 53143321 in words is "fifty-three million, one hundred forty-three thousand, three hundred twenty-one".