52668213 has 8 divisors (see below), whose sum is σ = 75626208. Its totient is φ = 32411184.

The previous prime is 52668211. The next prime is 52668221. The reversal of 52668213 is 31286625.

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

It is not a de Polignac number, because 52668213 - 2¹ = 52668211 is a prime.

It is a super-2 number, since 2×52668213² = 5547881321226738, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52668211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675195 + ... + 675272.

It is an arithmetic number, because the mean of its divisors is an integer number (9453276).

Almost surely, 2^52668213 is an apocalyptic number.

It is an amenable number.

52668213 is a deficient number, since it is larger than the sum of its proper divisors (22957995).

52668213 is a wasteful number, since it uses less digits than its factorization.

52668213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350483.

The product of its digits is 17280, while the sum is 33.

The square root of 52668213 is about 7257.2868897405. The cubic root of 52668213 is about 374.8431059227.

The spelling of 52668213 in words is "fifty-two million, six hundred sixty-eight thousand, two hundred thirteen".