53333333 has 4 divisors (see below), whose sum is σ = 54634188. Its totient is φ = 52032480.

The previous prime is 53333321. The next prime is 53333347. The reversal of 53333333 is 33333335.

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 4571044 + 48762289 = 2138^2 + 6983^2 .

It is a cyclic number.

It is not a de Polignac number, because 53333333 - 2¹⁰ = 53332309 is a prime.

It is a Duffinian number.

53333333 is a modest number, since divided by 33333 gives 533 as remainder.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53333363) 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, 650366 + ... + 650447.

It is an arithmetic number, because the mean of its divisors is an integer number (13658547).

Almost surely, 2^53333333 is an apocalyptic number.

It is an amenable number.

53333333 is a deficient number, since it is larger than the sum of its proper divisors (1300855).

53333333 is a wasteful number, since it uses less digits than its factorization.

53333333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300854.

The product of its digits is 10935, while the sum is 26.

The square root of 53333333 is about 7302.9674105804. The cubic root of 53333333 is about 376.4144107682.

Adding to 53333333 its reverse (33333335), we get a palindrome (86666668).

The spelling of 53333333 in words is "fifty-three million, three hundred thirty-three thousand, three hundred thirty-three".