53315443 has 4 divisors (see below), whose sum is σ = 55035328. Its totient is φ = 51595560.

The previous prime is 53315429. The next prime is 53315459. The reversal of 53315443 is 34451335.

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

It is a cyclic number.

It is not a de Polignac number, because 53315443 - 2⁵ = 53315411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53315413) 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, 859896 + ... + 859957.

It is an arithmetic number, because the mean of its divisors is an integer number (13758832).

Almost surely, 2^53315443 is an apocalyptic number.

53315443 is a deficient number, since it is larger than the sum of its proper divisors (1719885).

53315443 is a wasteful number, since it uses less digits than its factorization.

53315443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719884.

The product of its digits is 10800, while the sum is 28.

The square root of 53315443 is about 7301.7424632755. The cubic root of 53315443 is about 376.3723182248.

Adding to 53315443 its reverse (34451335), we get a palindrome (87766778).

The spelling of 53315443 in words is "fifty-three million, three hundred fifteen thousand, four hundred forty-three".