80878253 has 4 divisors (see below), whose sum is σ = 82204188. Its totient is φ = 79552320.

The previous prime is 80878249. The next prime is 80878277. The reversal of 80878253 is 35287808.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21557449 + 59320804 = 4643^2 + 7702^2 .

It is a cyclic number.

It is not a de Polignac number, because 80878253 - 2² = 80878249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80878253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80878223) 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, 662876 + ... + 662997.

It is an arithmetic number, because the mean of its divisors is an integer number (20551047).

Almost surely, 2^80878253 is an apocalyptic number.

It is an amenable number.

80878253 is a deficient number, since it is larger than the sum of its proper divisors (1325935).

80878253 is a wasteful number, since it uses less digits than its factorization.

80878253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325934.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 80878253 is about 8993.2337343138. The cubic root of 80878253 is about 432.4579851598.

The spelling of 80878253 in words is "eighty million, eight hundred seventy-eight thousand, two hundred fifty-three".