285451 has 2 divisors, whose sum is σ = 285452. Its totient is φ = 285450.

The previous prime is 285433. The next prime is 285457. The reversal of 285451 is 154582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285451 - 2¹¹ = 283403 is a prime.

It is equal to p₂₄₈₇₄ and since 285451 and 24874 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (285457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142725 + 142726.

It is an arithmetic number, because the mean of its divisors is an integer number (142726).

2²⁸⁵⁴⁵¹ is an apocalyptic number.

285451 is a deficient number, since it is larger than the sum of its proper divisors (1).

285451 is an equidigital number, since it uses as much as digits as its factorization.

285451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1600, while the sum is 25.

The square root of 285451 is about 534.2761458272. The cubic root of 285451 is about 65.8431383498.

It can be divided in two parts, 28 and 5451, that multiplied together give a triangular number (152628 = T₅₅₂).

The spelling of 285451 in words is "two hundred eighty-five thousand, four hundred fifty-one".