52152809 has 2 divisors, whose sum is σ = 52152810. Its totient is φ = 52152808.

The previous prime is 52152773. The next prime is 52152823. The reversal of 52152809 is 90825125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46199209 + 5953600 = 6797^2 + 2440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52152809 is a prime.

It is a super-3 number, since 3×52152809³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52152839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26076404 + 26076405.

It is an arithmetic number, because the mean of its divisors is an integer number (26076405).

Almost surely, 2^52152809 is an apocalyptic number.

It is an amenable number.

52152809 is a deficient number, since it is larger than the sum of its proper divisors (1).

52152809 is an equidigital number, since it uses as much as digits as its factorization.

52152809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 52152809 is about 7221.6901761291. The cubic root of 52152809 is about 373.6163743440.

The spelling of 52152809 in words is "fifty-two million, one hundred fifty-two thousand, eight hundred nine".