810252299 has 4 divisors (see below), whose sum is σ = 815223336. Its totient is φ = 805281264.

The previous prime is 810252269. The next prime is 810252337. The reversal of 810252299 is 992252018.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 992252018 = 2 ⋅496126009.

It is a cyclic number.

It is not a de Polignac number, because 810252299 - 2¹⁶ = 810186763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (810252269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2485274 + ... + 2485599.

It is an arithmetic number, because the mean of its divisors is an integer number (203805834).

Almost surely, 2^810252299 is an apocalyptic number.

810252299 is a deficient number, since it is larger than the sum of its proper divisors (4971037).

810252299 is a wasteful number, since it uses less digits than its factorization.

810252299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4971036.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 810252299 is about 28464.9310380334. The cubic root of 810252299 is about 932.2665258939.

The spelling of 810252299 in words is "eight hundred ten million, two hundred fifty-two thousand, two hundred ninety-nine".