80451145 has 4 divisors (see below), whose sum is σ = 96541380. Its totient is φ = 64360912.

The previous prime is 80451127. The next prime is 80451167. The reversal of 80451145 is 54115408.

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 11095561 + 69355584 = 3331^2 + 8328^2 .

It is a cyclic number.

It is not a de Polignac number, because 80451145 - 2⁹ = 80450633 is a prime.

It is a super-2 number, since 2×80451145² = 12944773463622050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8045110 + ... + 8045119.

It is an arithmetic number, because the mean of its divisors is an integer number (24135345).

Almost surely, 2^80451145 is an apocalyptic number.

It is an amenable number.

80451145 is a deficient number, since it is larger than the sum of its proper divisors (16090235).

80451145 is a wasteful number, since it uses less digits than its factorization.

80451145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16090234.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 80451145 is about 8969.4562265502. The cubic root of 80451145 is about 431.6953889016.

The spelling of 80451145 in words is "eighty million, four hundred fifty-one thousand, one hundred forty-five".