52342009 has 2 divisors, whose sum is σ = 52342010. Its totient is φ = 52342008.

The previous prime is 52342001. The next prime is 52342019. The reversal of 52342009 is 90024325.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30691600 + 21650409 = 5540^2 + 4653^2 .

It is a cyclic number.

It is not a de Polignac number, because 52342009 - 2³ = 52342001 is a prime.

It is not a weakly prime, because it can be changed into another prime (52342001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26171004 + 26171005.

It is an arithmetic number, because the mean of its divisors is an integer number (26171005).

Almost surely, 2^52342009 is an apocalyptic number.

It is an amenable number.

52342009 is a deficient number, since it is larger than the sum of its proper divisors (1).

52342009 is an equidigital number, since it uses as much as digits as its factorization.

52342009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 52342009 is about 7234.7777436491. Note that the first 4 decimals coincide. The cubic root of 52342009 is about 374.0676310154.

The spelling of 52342009 in words is "fifty-two million, three hundred forty-two thousand, nine".