80215001 has 4 divisors (see below), whose sum is σ = 82383012. Its totient is φ = 78046992.

The previous prime is 80214997. The next prime is 80215049. The reversal of 80215001 is 10051208.

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 53640976 + 26574025 = 7324^2 + 5155^2 .

It is a cyclic number.

It is not a de Polignac number, because 80215001 - 2² = 80214997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80215801) 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, 1083950 + ... + 1084023.

It is an arithmetic number, because the mean of its divisors is an integer number (20595753).

Almost surely, 2^80215001 is an apocalyptic number.

It is an amenable number.

80215001 is a deficient number, since it is larger than the sum of its proper divisors (2168011).

80215001 is a wasteful number, since it uses less digits than its factorization.

80215001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168010.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 80215001 is about 8956.2827668626. The cubic root of 80215001 is about 431.2725974016.

Adding to 80215001 its reverse (10051208), we get a palindrome (90266209).

The spelling of 80215001 in words is "eighty million, two hundred fifteen thousand, one".