53143313 has 4 divisors (see below), whose sum is σ = 54379248. Its totient is φ = 51907380.

The previous prime is 53143303. The next prime is 53143319. The reversal of 53143313 is 31334135.

It is a happy number.

53143313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53143313 - 2⁴ = 53143297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53143319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 617903 + ... + 617988.

It is an arithmetic number, because the mean of its divisors is an integer number (13594812).

Almost surely, 2^53143313 is an apocalyptic number.

It is an amenable number.

53143313 is a deficient number, since it is larger than the sum of its proper divisors (1235935).

53143313 is a wasteful number, since it uses less digits than its factorization.

53143313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235934.

The product of its digits is 1620, while the sum is 23.

The square root of 53143313 is about 7289.9460217480. The cubic root of 53143313 is about 375.9668396326.

Adding to 53143313 its reverse (31334135), we get a palindrome (84477448).

The spelling of 53143313 in words is "fifty-three million, one hundred forty-three thousand, three hundred thirteen".