80543461 has 4 divisors (see below), whose sum is σ = 80592300. Its totient is φ = 80494624.

The previous prime is 80543453. The next prime is 80543471. The reversal of 80543461 is 16434508.

It is a happy number.

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 4330561 + 76212900 = 2081^2 + 8730^2 .

It is a cyclic number.

It is not a de Polignac number, because 80543461 - 2³ = 80543453 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 (80543471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21856 + ... + 25273.

It is an arithmetic number, because the mean of its divisors is an integer number (20148075).

Almost surely, 2^80543461 is an apocalyptic number.

It is an amenable number.

80543461 is a deficient number, since it is larger than the sum of its proper divisors (48839).

80543461 is a wasteful number, since it uses less digits than its factorization.

80543461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48838.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 80543461 is about 8974.6008824905. The cubic root of 80543461 is about 431.8604462498.

Adding to 80543461 its reverse (16434508), we get a palindrome (96977969).

The spelling of 80543461 in words is "eighty million, five hundred forty-three thousand, four hundred sixty-one".