285151 has 2 divisors, whose sum is σ = 285152. Its totient is φ = 285150.

The previous prime is 285139. The next prime is 285161. The reversal of 285151 is 151582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285151 - 2⁵ = 285119 is a prime.

It is a super-2 number, since 2×285151² = 162622185602, which contains 22 as substring.

285151 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142575 + 142576.

It is an arithmetic number, because the mean of its divisors is an integer number (142576).

2²⁸⁵¹⁵¹ is an apocalyptic number.

285151 is a deficient number, since it is larger than the sum of its proper divisors (1).

285151 is an equidigital number, since it uses as much as digits as its factorization.

285151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 400, while the sum is 22.

The square root of 285151 is about 533.9953183315. The cubic root of 285151 is about 65.8200639104.

The spelling of 285151 in words is "two hundred eighty-five thousand, one hundred fifty-one".