166252543 has 2 divisors, whose sum is σ = 166252544. Its totient is φ = 166252542.

The previous prime is 166252531. The next prime is 166252553. The reversal of 166252543 is 345252661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166252543 - 2¹⁷ = 166121471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166252499 and 166252508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166252553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83126271 + 83126272.

It is an arithmetic number, because the mean of its divisors is an integer number (83126272).

Almost surely, 2^166252543 is an apocalyptic number.

166252543 is a deficient number, since it is larger than the sum of its proper divisors (1).

166252543 is an equidigital number, since it uses as much as digits as its factorization.

166252543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 34.

The square root of 166252543 is about 12893.8955711608. The cubic root of 166252543 is about 549.8650280371.

The spelling of 166252543 in words is "one hundred sixty-six million, two hundred fifty-two thousand, five hundred forty-three".