166527427 has 16 divisors (see below), whose sum is σ = 193249152. Its totient is φ = 141819520.

The previous prime is 166527401. The next prime is 166527437. The reversal of 166527427 is 724725661.

It is a cyclic number.

It is not a de Polignac number, because 166527427 - 2¹⁹ = 166003139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166527427.

It is not an unprimeable number, because it can be changed into a prime (166527437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40488 + ... + 44410.

It is an arithmetic number, because the mean of its divisors is an integer number (12078072).

Almost surely, 2^166527427 is an apocalyptic number.

166527427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

166527427 is a deficient number, since it is larger than the sum of its proper divisors (26721725).

166527427 is a wasteful number, since it uses less digits than its factorization.

166527427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4178.

The product of its digits is 141120, while the sum is 40.

The square root of 166527427 is about 12904.5506314633. The cubic root of 166527427 is about 550.1679123683.

It can be divided in two parts, 1665 and 27427, that added together give a palindrome (29092).

The spelling of 166527427 in words is "one hundred sixty-six million, five hundred twenty-seven thousand, four hundred twenty-seven".