166850253 has 16 divisors (see below), whose sum is σ = 255710400. Its totient is φ = 107397360.

The previous prime is 166850251. The next prime is 166850261. The reversal of 166850253 is 352058661.

It is not a de Polignac number, because 166850253 - 2¹ = 166850251 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166850251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105763 + ... + 107328.

It is an arithmetic number, because the mean of its divisors is an integer number (15981900).

Almost surely, 2^166850253 is an apocalyptic number.

It is an amenable number.

166850253 is a deficient number, since it is larger than the sum of its proper divisors (88860147).

166850253 is a wasteful number, since it uses less digits than its factorization.

166850253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213129 (or 213123 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 166850253 is about 12917.0527985295. The cubic root of 166850253 is about 550.5231969080.

The spelling of 166850253 in words is "one hundred sixty-six million, eight hundred fifty thousand, two hundred fifty-three".