80780533 has 16 divisors (see below), whose sum is σ = 87635520. Its totient is φ = 74221056.

The previous prime is 80780521. The next prime is 80780551. The reversal of 80780533 is 33508708.

It is a cyclic number.

It is not a de Polignac number, because 80780533 - 2¹⁷ = 80649461 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 (80780503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97266 + ... + 98092.

It is an arithmetic number, because the mean of its divisors is an integer number (5477220).

Almost surely, 2^80780533 is an apocalyptic number.

It is an amenable number.

80780533 is a deficient number, since it is larger than the sum of its proper divisors (6854987).

80780533 is a wasteful number, since it uses less digits than its factorization.

80780533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 80780533 is about 8987.7991188054. The cubic root of 80780533 is about 432.2837445611.

The spelling of 80780533 in words is "eighty million, seven hundred eighty thousand, five hundred thirty-three".