80518133 has 4 divisors (see below), whose sum is σ = 80654508. Its totient is φ = 80381760.

The previous prime is 80518117. The next prime is 80518153. The reversal of 80518133 is 33181508.

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 16630084 + 63888049 = 4078^2 + 7993^2 .

It is a cyclic number.

It is not a de Polignac number, because 80518133 - 2⁴ = 80518117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80518096 and 80518105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80518153) 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, 67298 + ... + 68483.

It is an arithmetic number, because the mean of its divisors is an integer number (20163627).

Almost surely, 2^80518133 is an apocalyptic number.

It is an amenable number.

80518133 is a deficient number, since it is larger than the sum of its proper divisors (136375).

80518133 is a wasteful number, since it uses less digits than its factorization.

80518133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136374.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 80518133 is about 8973.1896781468. The cubic root of 80518133 is about 431.8151733500.

The spelling of 80518133 in words is "eighty million, five hundred eighteen thousand, one hundred thirty-three".