166627541 has 2 divisors, whose sum is σ = 166627542. Its totient is φ = 166627540.

The previous prime is 166627471. The next prime is 166627553. The reversal of 166627541 is 145726661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95140516 + 71487025 = 9754^2 + 8455^2 .

It is a cyclic number.

It is not a de Polignac number, because 166627541 - 2¹⁰ = 166626517 is a prime.

It is a Chen prime.

It is equal to p_9324893 and since 166627541 and 9324893 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 166627495 and 166627504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166627561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83313770 + 83313771.

It is an arithmetic number, because the mean of its divisors is an integer number (83313771).

Almost surely, 2^166627541 is an apocalyptic number.

It is an amenable number.

166627541 is a deficient number, since it is larger than the sum of its proper divisors (1).

166627541 is an equidigital number, since it uses as much as digits as its factorization.

166627541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 166627541 is about 12908.4290678610. The cubic root of 166627541 is about 550.2781414106.

The spelling of 166627541 in words is "one hundred sixty-six million, six hundred twenty-seven thousand, five hundred forty-one".