166248451 has 2 divisors, whose sum is σ = 166248452. Its totient is φ = 166248450.

The previous prime is 166248421. The next prime is 166248517. The reversal of 166248451 is 154842661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166248451 - 2¹⁷ = 166117379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166248451.

It is not a weakly prime, because it can be changed into another prime (166248421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83124225 + 83124226.

It is an arithmetic number, because the mean of its divisors is an integer number (83124226).

Almost surely, 2^166248451 is an apocalyptic number.

166248451 is a deficient number, since it is larger than the sum of its proper divisors (1).

166248451 is an equidigital number, since it uses as much as digits as its factorization.

166248451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 37.

The square root of 166248451 is about 12893.7368904441. The cubic root of 166248451 is about 549.8605166953.

The spelling of 166248451 in words is "one hundred sixty-six million, two hundred forty-eight thousand, four hundred fifty-one".