53213330 has 8 divisors (see below), whose sum is σ = 95784012. Its totient is φ = 21285328.

The previous prime is 53213323. The next prime is 53213333. The reversal of 53213330 is 3331235.

It can be written as a sum of positive squares in 2 ways, for example, as 47927929 + 5285401 = 6923^2 + 2299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (53213333) 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, 2660657 + ... + 2660676.

Almost surely, 2^53213330 is an apocalyptic number.

53213330 is a deficient number, since it is larger than the sum of its proper divisors (42570682).

53213330 is a wasteful number, since it uses less digits than its factorization.

53213330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5321340.

The product of its (nonzero) digits is 810, while the sum is 20.

The square root of 53213330 is about 7294.7467399492. The cubic root of 53213330 is about 376.1318808918.

Adding to 53213330 its reverse (3331235), we get a palindrome (56544565).

The spelling of 53213330 in words is "fifty-three million, two hundred thirteen thousand, three hundred thirty".