166111523 has 2 divisors, whose sum is σ = 166111524. Its totient is φ = 166111522.

The previous prime is 166111513. The next prime is 166111553. The reversal of 166111523 is 325111661.

166111523 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 is a cyclic number.

It is not a de Polignac number, because 166111523 - 2¹² = 166107427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166111492 and 166111501.

It is not a weakly prime, because it can be changed into another prime (166111513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83055761 + 83055762.

It is an arithmetic number, because the mean of its divisors is an integer number (83055762).

Almost surely, 2^166111523 is an apocalyptic number.

166111523 is a deficient number, since it is larger than the sum of its proper divisors (1).

166111523 is an equidigital number, since it uses as much as digits as its factorization.

166111523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 26.

The square root of 166111523 is about 12888.4259318196. The cubic root of 166111523 is about 549.7095138224.

The spelling of 166111523 in words is "one hundred sixty-six million, one hundred eleven thousand, five hundred twenty-three".