80271621 has 8 divisors (see below), whose sum is σ = 118920960. Its totient is φ = 53514396.

The previous prime is 80271619. The next prime is 80271641. The reversal of 80271621 is 12617208.

It is not a de Polignac number, because 80271621 - 2¹ = 80271619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2973023 = 80271621 / (8 + 0 + 2 + 7 + 1 + 6 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80271641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1486485 + ... + 1486538.

It is an arithmetic number, because the mean of its divisors is an integer number (14865120).

Almost surely, 2^80271621 is an apocalyptic number.

It is an amenable number.

80271621 is a deficient number, since it is larger than the sum of its proper divisors (38649339).

80271621 is a wasteful number, since it uses less digits than its factorization.

80271621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973032 (or 2973026 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 80271621 is about 8959.4431188551. The cubic root of 80271621 is about 431.3740452234.

Adding to 80271621 its reverse (12617208), we get a palindrome (92888829).

The spelling of 80271621 in words is "eighty million, two hundred seventy-one thousand, six hundred twenty-one".