217000052 has 12 divisors (see below), whose sum is σ = 380584260. Its totient is φ = 108261696.

The previous prime is 217000039. The next prime is 217000061. The reversal of 217000052 is 250000712.

It can be written as a sum of positive squares in 2 ways, for example, as 120253156 + 96746896 = 10966^2 + 9836^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57527 + ... + 61182.

It is an arithmetic number, because the mean of its divisors is an integer number (31715355).

Almost surely, 2^217000052 is an apocalyptic number.

It is an amenable number.

217000052 is a deficient number, since it is larger than the sum of its proper divisors (163584208).

217000052 is a wasteful number, since it uses less digits than its factorization.

217000052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119170 (or 119168 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 217000052 is about 14730.9216276511. The cubic root of 217000052 is about 600.9245486918.

Adding to 217000052 its reverse (250000712), we get a palindrome (467000764).

The spelling of 217000052 in words is "two hundred seventeen million, fifty-two", and thus it is an aban number.