80208901 has 4 divisors (see below), whose sum is σ = 80231404. Its totient is φ = 80186400.

The previous prime is 80208871. The next prime is 80208917. The reversal of 80208901 is 10980208.

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 48860100 + 31348801 = 6990^2 + 5599^2 .

It is a cyclic number.

It is not a de Polignac number, because 80208901 - 2⁹ = 80208389 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 80208901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80208301) 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, 4590 + ... + 13471.

It is an arithmetic number, because the mean of its divisors is an integer number (20057851).

Almost surely, 2^80208901 is an apocalyptic number.

It is an amenable number.

80208901 is a deficient number, since it is larger than the sum of its proper divisors (22503).

80208901 is a wasteful number, since it uses less digits than its factorization.

80208901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22502.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 80208901 is about 8955.9422173214. The cubic root of 80208901 is about 431.2616649929.

It can be divided in two parts, 80 and 208901, that added together give a triangular number (208981 = T₆₄₆).

The spelling of 80208901 in words is "eighty million, two hundred eight thousand, nine hundred one".