408251 has 2 divisors, whose sum is σ = 408252. Its totient is φ = 408250.

The previous prime is 408241. The next prime is 408263. The reversal of 408251 is 152804.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408251 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (408211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204125 + 204126.

It is an arithmetic number, because the mean of its divisors is an integer number (204126).

2⁴⁰⁸²⁵¹ is an apocalyptic number.

408251 is a deficient number, since it is larger than the sum of its proper divisors (1).

408251 is an equidigital number, since it uses as much as digits as its factorization.

408251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 408251 is about 638.9452245694. The cubic root of 408251 is about 74.1838016771.

The spelling of 408251 in words is "four hundred eight thousand, two hundred fifty-one".