80863157 has 4 divisors (see below), whose sum is σ = 80916780. Its totient is φ = 80809536.

The previous prime is 80863151. The next prime is 80863187. The reversal of 80863157 is 75136808.

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 40018276 + 40844881 = 6326^2 + 6391^2 .

It is a cyclic number.

It is not a de Polignac number, because 80863157 - 2¹⁶ = 80797621 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 80863157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80863151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24482 + ... + 27587.

It is an arithmetic number, because the mean of its divisors is an integer number (20229195).

Almost surely, 2^80863157 is an apocalyptic number.

It is an amenable number.

80863157 is a deficient number, since it is larger than the sum of its proper divisors (53623).

80863157 is a wasteful number, since it uses less digits than its factorization.

80863157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53622.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 80863157 is about 8992.3943974895. The cubic root of 80863157 is about 432.4310772593.

The spelling of 80863157 in words is "eighty million, eight hundred sixty-three thousand, one hundred fifty-seven".