80221513 has 4 divisors (see below), whose sum is σ = 82389700. Its totient is φ = 78053328.

The previous prime is 80221507. The next prime is 80221523. The reversal of 80221513 is 31512208.

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 51093904 + 29127609 = 7148^2 + 5397^2 .

It is a cyclic number.

It is not a de Polignac number, because 80221513 - 2¹⁷ = 80090441 is a prime.

It is a super-2 number, since 2×80221513² = 12870982296018338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80221523) 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, 1084038 + ... + 1084111.

It is an arithmetic number, because the mean of its divisors is an integer number (20597425).

Almost surely, 2^80221513 is an apocalyptic number.

It is an amenable number.

80221513 is a deficient number, since it is larger than the sum of its proper divisors (2168187).

80221513 is a wasteful number, since it uses less digits than its factorization.

80221513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168186.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 80221513 is about 8956.6463031650. The cubic root of 80221513 is about 431.2842675843.

The spelling of 80221513 in words is "eighty million, two hundred twenty-one thousand, five hundred thirteen".