52612209 has 12 divisors (see below), whose sum is σ = 81841396. Its totient is φ = 32376672.

The previous prime is 52612171. The next prime is 52612243. The reversal of 52612209 is 90221625.

It can be written as a sum of positive squares in 2 ways, for example, as 33005025 + 19607184 = 5745^2 + 4428^2 .

It is not a de Polignac number, because 52612209 - 2⁷ = 52612081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52612249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224722 + ... + 224955.

Almost surely, 2^52612209 is an apocalyptic number.

It is an amenable number.

52612209 is a deficient number, since it is larger than the sum of its proper divisors (29229187).

52612209 is a wasteful number, since it uses less digits than its factorization.

52612209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449696 (or 449693 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 52612209 is about 7253.4273967553. The cubic root of 52612209 is about 374.7101974296.

The spelling of 52612209 in words is "fifty-two million, six hundred twelve thousand, two hundred nine".