152078809 has 2 divisors, whose sum is σ = 152078810. Its totient is φ = 152078808.

The previous prime is 152078803. The next prime is 152078833. The reversal of 152078809 is 908870251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151979584 + 99225 = 12328^2 + 315^2 .

It is an emirp because it is prime and its reverse (908870251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 152078809 - 2¹³ = 152070617 is a prime.

It is not a weakly prime, because it can be changed into another prime (152078803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76039404 + 76039405.

It is an arithmetic number, because the mean of its divisors is an integer number (76039405).

Almost surely, 2^152078809 is an apocalyptic number.

It is an amenable number.

152078809 is a deficient number, since it is larger than the sum of its proper divisors (1).

152078809 is an equidigital number, since it uses as much as digits as its factorization.

152078809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 152078809 is about 12332.0237187576. The cubic root of 152078809 is about 533.7725480477.

The spelling of 152078809 in words is "one hundred fifty-two million, seventy-eight thousand, eight hundred nine".