166481053 has 2 divisors, whose sum is σ = 166481054. Its totient is φ = 166481052.

The previous prime is 166481023. The next prime is 166481057. The reversal of 166481053 is 350184661.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94536729 + 71944324 = 9723^2 + 8482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166481053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166481057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83240526 + 83240527.

It is an arithmetic number, because the mean of its divisors is an integer number (83240527).

Almost surely, 2^166481053 is an apocalyptic number.

It is an amenable number.

166481053 is a deficient number, since it is larger than the sum of its proper divisors (1).

166481053 is an equidigital number, since it uses as much as digits as its factorization.

166481053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 166481053 is about 12902.7536983390. The cubic root of 166481053 is about 550.1168379879.

The spelling of 166481053 in words is "one hundred sixty-six million, four hundred eighty-one thousand, fifty-three".