166250053 has 2 divisors, whose sum is σ = 166250054. Its totient is φ = 166250052.

The previous prime is 166250041. The next prime is 166250113. The reversal of 166250053 is 350052661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150234049 + 16016004 = 12257^2 + 4002^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166250053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166250153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83125026 + 83125027.

It is an arithmetic number, because the mean of its divisors is an integer number (83125027).

Almost surely, 2^166250053 is an apocalyptic number.

It is an amenable number.

166250053 is a deficient number, since it is larger than the sum of its proper divisors (1).

166250053 is an equidigital number, since it uses as much as digits as its factorization.

166250053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 166250053 is about 12893.7990134793. The cubic root of 166250053 is about 549.8622828746.

It can be divided in two parts, 1662 and 50053, that added together give a palindrome (51715).

The spelling of 166250053 in words is "one hundred sixty-six million, two hundred fifty thousand, fifty-three".