80820481 has 4 divisors (see below), whose sum is σ = 92366272. Its totient is φ = 69274692.

The previous prime is 80820463. The next prime is 80820511. The reversal of 80820481 is 18402808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80820481 - 2⁷ = 80820353 is a prime.

It is a super-2 number, since 2×80820481² = 13063900298142722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80820461) 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, 5772885 + ... + 5772898.

It is an arithmetic number, because the mean of its divisors is an integer number (23091568).

Almost surely, 2^80820481 is an apocalyptic number.

It is an amenable number.

80820481 is a deficient number, since it is larger than the sum of its proper divisors (11545791).

80820481 is a wasteful number, since it uses less digits than its factorization.

80820481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11545790.

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 80820481 is about 8990.0211901864. The cubic root of 80820481 is about 432.3549912033.

The spelling of 80820481 in words is "eighty million, eight hundred twenty thousand, four hundred eighty-one".