2017281 has 12 divisors (see below), whose sum is σ = 3129072. Its totient is φ = 1152648.

The previous prime is 2017247. The next prime is 2017283. The reversal of 2017281 is 1827102.

It is not a de Polignac number, because 2017281 - 2⁶ = 2017217 is a prime.

It is a super-2 number, since 2×2017281² = 8138845265922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2017283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6715 + ... + 7008.

It is an arithmetic number, because the mean of its divisors is an integer number (260756).

It is a Proth number, since it is equal to 985 ⋅ 2¹¹ + 1 and 985 < 2¹¹.

2^2017281 is an apocalyptic number.

2017281 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2017281 is a deficient number, since it is larger than the sum of its proper divisors (1111791).

2017281 is a wasteful number, since it uses less digits than its factorization.

2017281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13740 (or 13733 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 2017281 is about 1420.3101773908. The cubic root of 2017281 is about 126.3539430890.

The spelling of 2017281 in words is "two million, seventeen thousand, two hundred eighty-one".