166045263 has 4 divisors (see below), whose sum is σ = 221393688. Its totient is φ = 110696840.

The previous prime is 166045249. The next prime is 166045267. The reversal of 166045263 is 362540661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166045263 - 2⁴ = 166045247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166045267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27674208 + ... + 27674213.

It is an arithmetic number, because the mean of its divisors is an integer number (55348422).

Almost surely, 2^166045263 is an apocalyptic number.

166045263 is a deficient number, since it is larger than the sum of its proper divisors (55348425).

166045263 is an equidigital number, since it uses as much as digits as its factorization.

166045263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55348424.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 166045263 is about 12885.8551520650. The cubic root of 166045263 is about 549.6364131412.

The spelling of 166045263 in words is "one hundred sixty-six million, forty-five thousand, two hundred sixty-three".