166478527 has 2 divisors, whose sum is σ = 166478528. Its totient is φ = 166478526.

The previous prime is 166478497. The next prime is 166478539. The reversal of 166478527 is 725874661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166478527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166478927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83239263 + 83239264.

It is an arithmetic number, because the mean of its divisors is an integer number (83239264).

Almost surely, 2^166478527 is an apocalyptic number.

166478527 is a deficient number, since it is larger than the sum of its proper divisors (1).

166478527 is an equidigital number, since it uses as much as digits as its factorization.

166478527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 46.

The square root of 166478527 is about 12902.6558118862. The cubic root of 166478527 is about 550.1140556850.

The spelling of 166478527 in words is "one hundred sixty-six million, four hundred seventy-eight thousand, five hundred twenty-seven".