152243309 has 2 divisors, whose sum is σ = 152243310. Its totient is φ = 152243308.

The previous prime is 152243261. The next prime is 152243317. The reversal of 152243309 is 903342251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127193284 + 25050025 = 11278^2 + 5005^2 .

It is a cyclic number.

It is not a de Polignac number, because 152243309 - 2²⁰ = 151194733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152243339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76121654 + 76121655.

It is an arithmetic number, because the mean of its divisors is an integer number (76121655).

Almost surely, 2^152243309 is an apocalyptic number.

It is an amenable number.

152243309 is a deficient number, since it is larger than the sum of its proper divisors (1).

152243309 is an equidigital number, since it uses as much as digits as its factorization.

152243309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 152243309 is about 12338.6915432715. The cubic root of 152243309 is about 533.9649350184.

The spelling of 152243309 in words is "one hundred fifty-two million, two hundred forty-three thousand, three hundred nine".