2017491 has 16 divisors (see below), whose sum is σ = 3208704. Its totient is φ = 1102464.

The previous prime is 2017489. The next prime is 2017493. The reversal of 2017491 is 1947102.

It is an interprime number because it is at equal distance from previous prime (2017489) and next prime (2017493).

It is not a de Polignac number, because 2017491 - 2¹ = 2017489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2017493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1606 + ... + 2571.

It is an arithmetic number, because the mean of its divisors is an integer number (200544).

2^2017491 is an apocalyptic number.

2017491 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2017491 is a deficient number, since it is larger than the sum of its proper divisors (1191213).

2017491 is a wasteful number, since it uses less digits than its factorization.

2017491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 2017491 is about 1420.3841029806. The cubic root of 2017491 is about 126.3583274405.

The spelling of 2017491 in words is "two million, seventeen thousand, four hundred ninety-one".