52125209 has 16 divisors (see below), whose sum is σ = 55641600. Its totient is φ = 48748224.

The previous prime is 52125197. The next prime is 52125221. The reversal of 52125209 is 90252125.

It is an interprime number because it is at equal distance from previous prime (52125197) and next prime (52125221).

It is a cyclic number.

It is not a de Polignac number, because 52125209 - 2²⁰ = 51076633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52125809) 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, 227507 + ... + 227735.

It is an arithmetic number, because the mean of its divisors is an integer number (3477600).

Almost surely, 2^52125209 is an apocalyptic number.

It is an amenable number.

52125209 is a deficient number, since it is larger than the sum of its proper divisors (3516391).

52125209 is a wasteful number, since it uses less digits than its factorization.

52125209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 52125209 is about 7219.7790132386. The cubic root of 52125209 is about 373.5504550342.

The spelling of 52125209 in words is "fifty-two million, one hundred twenty-five thousand, two hundred nine".