80212061 has 4 divisors (see below), whose sum is σ = 80232252. Its totient is φ = 80191872.

The previous prime is 80212043. The next prime is 80212081. The reversal of 80212061 is 16021208.

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 42328036 + 37884025 = 6506^2 + 6155^2 .

It is a cyclic number.

It is not a de Polignac number, because 80212061 - 2⁶ = 80211997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80212081) 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, 1940 + ... + 12813.

It is an arithmetic number, because the mean of its divisors is an integer number (20058063).

Almost surely, 2^80212061 is an apocalyptic number.

It is an amenable number.

80212061 is a deficient number, since it is larger than the sum of its proper divisors (20191).

80212061 is a wasteful number, since it uses less digits than its factorization.

80212061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20190.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 80212061 is about 8956.1186347658. The cubic root of 80212061 is about 431.2673284082.

Adding to 80212061 its reverse (16021208), we get a palindrome (96233269).

The spelling of 80212061 in words is "eighty million, two hundred twelve thousand, sixty-one".