166132523 has 4 divisors (see below), whose sum is σ = 174876360. Its totient is φ = 157388688.

The previous prime is 166132507. The next prime is 166132537. The reversal of 166132523 is 325231661.

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 166132523 - 2⁴ = 166132507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166132543) 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, 4371890 + ... + 4371927.

It is an arithmetic number, because the mean of its divisors is an integer number (43719090).

Almost surely, 2^166132523 is an apocalyptic number.

166132523 is a deficient number, since it is larger than the sum of its proper divisors (8743837).

166132523 is an equidigital number, since it uses as much as digits as its factorization.

166132523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8743836.

The product of its digits is 6480, while the sum is 29.

The square root of 166132523 is about 12889.2405905080. The cubic root of 166132523 is about 549.7326778052.

The spelling of 166132523 in words is "one hundred sixty-six million, one hundred thirty-two thousand, five hundred twenty-three".