52020209 has 8 divisors (see below), whose sum is σ = 52918272. Its totient is φ = 51126880.

The previous prime is 52020203. The next prime is 52020217. The reversal of 52020209 is 90202025.

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

It is a cyclic number.

It is not a de Polignac number, because 52020209 - 2⁴ = 52020193 is a prime.

It is a super-2 number, since 2×52020209² = 5412204288807362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52020203) 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, 26237 + ... + 28149.

It is an arithmetic number, because the mean of its divisors is an integer number (6614784).

Almost surely, 2^52020209 is an apocalyptic number.

It is an amenable number.

52020209 is a deficient number, since it is larger than the sum of its proper divisors (898063).

52020209 is a wasteful number, since it uses less digits than its factorization.

52020209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 52020209 is about 7212.5036568448. The cubic root of 52020209 is about 373.2994621872.

The spelling of 52020209 in words is "fifty-two million, twenty thousand, two hundred nine".