166251467 has 2 divisors, whose sum is σ = 166251468. Its totient is φ = 166251466.

The previous prime is 166251457. The next prime is 166251469. The reversal of 166251467 is 764152661.

It is a strong prime.

It is an emirp because it is prime and its reverse (764152661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166251467 is a prime.

Together with 166251469, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166251467.

It is not a weakly prime, because it can be changed into another prime (166251469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83125733 + 83125734.

It is an arithmetic number, because the mean of its divisors is an integer number (83125734).

Almost surely, 2^166251467 is an apocalyptic number.

166251467 is a deficient number, since it is larger than the sum of its proper divisors (1).

166251467 is an equidigital number, since it uses as much as digits as its factorization.

166251467 is an evil number, because the sum of its binary digits is even.

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

The square root of 166251467 is about 12893.8538459221. The cubic root of 166251467 is about 549.8638417775.

The spelling of 166251467 in words is "one hundred sixty-six million, two hundred fifty-one thousand, four hundred sixty-seven".