52660213 has 6 divisors (see below), whose sum is σ = 54128834. Its totient is φ = 51194016.

The previous prime is 52660211. The next prime is 52660219. The reversal of 52660213 is 31206625.

It can be written as a sum of positive squares in 3 ways, for example, as 18472804 + 34187409 = 4298^2 + 5847^2 .

It is not a de Polignac number, because 52660213 - 2¹ = 52660211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52660211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43545 + ... + 44737.

Almost surely, 2^52660213 is an apocalyptic number.

It is an amenable number.

52660213 is a deficient number, since it is larger than the sum of its proper divisors (1468621).

52660213 is an frugal number, since it uses more digits than its factorization.

52660213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423 (or 1230 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 52660213 is about 7256.7356986458. The cubic root of 52660213 is about 374.8241261212.

Adding to 52660213 its reverse (31206625), we get a palindrome (83866838).

The spelling of 52660213 in words is "fifty-two million, six hundred sixty thousand, two hundred thirteen".