180021053 has 2 divisors, whose sum is σ = 180021054. Its totient is φ = 180021052.

The previous prime is 180021001. The next prime is 180021059. The reversal of 180021053 is 350120081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95785369 + 84235684 = 9787^2 + 9178^2 .

It is an emirp because it is prime and its reverse (350120081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 180021053 - 2⁶ = 180020989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180021059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90010526 + 90010527.

It is an arithmetic number, because the mean of its divisors is an integer number (90010527).

Almost surely, 2^180021053 is an apocalyptic number.

It is an amenable number.

180021053 is a deficient number, since it is larger than the sum of its proper divisors (1).

180021053 is an equidigital number, since it uses as much as digits as its factorization.

180021053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 180021053 is about 13417.1924410437. The cubic root of 180021053 is about 564.6436293944.

The spelling of 180021053 in words is "one hundred eighty million, twenty-one thousand, fifty-three".