80813057 has 4 divisors (see below), whose sum is σ = 87029460. Its totient is φ = 74596656.

The previous prime is 80813027. The next prime is 80813093. The reversal of 80813057 is 75031808.

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 28987456 + 51825601 = 5384^2 + 7199^2 .

It is a cyclic number.

It is not a de Polignac number, because 80813057 - 2¹² = 80808961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80813017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3108182 + ... + 3108207.

It is an arithmetic number, because the mean of its divisors is an integer number (21757365).

Almost surely, 2^80813057 is an apocalyptic number.

It is an amenable number.

80813057 is a deficient number, since it is larger than the sum of its proper divisors (6216403).

80813057 is a wasteful number, since it uses less digits than its factorization.

80813057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6216402.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 80813057 is about 8989.6082784513. The cubic root of 80813057 is about 432.3417523901.

The spelling of 80813057 in words is "eighty million, eight hundred thirteen thousand, fifty-seven".