52051209 has 16 divisors (see below), whose sum is σ = 80274432. Its totient is φ = 29384208.

The previous prime is 52051187. The next prime is 52051211. The reversal of 52051209 is 90215025.

It is not a de Polignac number, because 52051209 - 2⁷ = 52051081 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52051249) 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, 13189 + ... + 16674.

It is an arithmetic number, because the mean of its divisors is an integer number (5017152).

Almost surely, 2^52051209 is an apocalyptic number.

It is an amenable number.

52051209 is a deficient number, since it is larger than the sum of its proper divisors (28223223).

52051209 is a wasteful number, since it uses less digits than its factorization.

52051209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29956.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 52051209 is about 7214.6523824783. The cubic root of 52051209 is about 373.3735999475.

The spelling of 52051209 in words is "fifty-two million, fifty-one thousand, two hundred nine".