52212009 has 16 divisors (see below), whose sum is σ = 70862400. Its totient is φ = 34189056.

The previous prime is 52211963. The next prime is 52212023. The reversal of 52212009 is 90021225.

It is not a de Polignac number, because 52212009 - 2¹³ = 52203817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52212059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91477 + ... + 92045.

It is an arithmetic number, because the mean of its divisors is an integer number (4428900).

Almost surely, 2^52212009 is an apocalyptic number.

It is an amenable number.

52212009 is a deficient number, since it is larger than the sum of its proper divisors (18650391).

52212009 is a wasteful number, since it uses less digits than its factorization.

52212009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 52212009 is about 7225.7877771216. The cubic root of 52212009 is about 373.7576880855.

The spelling of 52212009 in words is "fifty-two million, two hundred twelve thousand, nine".