166737253 has 2 divisors, whose sum is σ = 166737254. Its totient is φ = 166737252.

The previous prime is 166737239. The next prime is 166737271. The reversal of 166737253 is 352737661.

166737253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155326369 + 11410884 = 12463^2 + 3378^2 .

It is a cyclic number.

It is not a de Polignac number, because 166737253 - 2¹³ = 166729061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166737203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83368626 + 83368627.

It is an arithmetic number, because the mean of its divisors is an integer number (83368627).

Almost surely, 2^166737253 is an apocalyptic number.

It is an amenable number.

166737253 is a deficient number, since it is larger than the sum of its proper divisors (1).

166737253 is an equidigital number, since it uses as much as digits as its factorization.

166737253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 40.

The square root of 166737253 is about 12912.6779949010. The cubic root of 166737253 is about 550.3988874964.

The spelling of 166737253 in words is "one hundred sixty-six million, seven hundred thirty-seven thousand, two hundred fifty-three".