180021059 has 2 divisors, whose sum is σ = 180021060. Its totient is φ = 180021058.

The previous prime is 180021053. The next prime is 180021071. The reversal of 180021059 is 950120081.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 180021059 - 2²⁰ = 178972483 is a prime.

It is not a weakly prime, because it can be changed into another prime (180021053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90010529 + 90010530.

It is an arithmetic number, because the mean of its divisors is an integer number (90010530).

Almost surely, 2^180021059 is an apocalyptic number.

180021059 is a deficient number, since it is larger than the sum of its proper divisors (1).

180021059 is an equidigital number, since it uses as much as digits as its factorization.

180021059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 180021059 is about 13417.1926646374. The cubic root of 180021059 is about 564.6436356674.

The spelling of 180021059 in words is "one hundred eighty million, twenty-one thousand, fifty-nine".