168451 has 2 divisors, whose sum is σ = 168452. Its totient is φ = 168450.

The previous prime is 168449. The next prime is 168457. The reversal of 168451 is 154861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168451 - 2¹ = 168449 is a prime.

Together with 168449, it forms a pair of twin primes.

It is a zygodrome in base 6.

It is not a weakly prime, because it can be changed into another prime (168457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84225 + 84226.

It is an arithmetic number, because the mean of its divisors is an integer number (84226).

2¹⁶⁸⁴⁵¹ is an apocalyptic number.

168451 is a deficient number, since it is larger than the sum of its proper divisors (1).

168451 is an equidigital number, since it uses as much as digits as its factorization.

168451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 25.

The square root of 168451 is about 410.4278255674. The cubic root of 168451 is about 55.2278153940.

The spelling of 168451 in words is "one hundred sixty-eight thousand, four hundred fifty-one".