1017145 has 4 divisors (see below), whose sum is σ = 1220580. Its totient is φ = 813712.

The previous prime is 1017139. The next prime is 1017157. The reversal of 1017145 is 5417101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5417101 = 17 ⋅318653.

It can be written as a sum of positive squares in 2 ways, for example, as 135424 + 881721 = 368^2 + 939^2 .

It is a cyclic number.

It is not a de Polignac number, because 1017145 - 2¹¹ = 1015097 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101710 + ... + 101719.

It is an arithmetic number, because the mean of its divisors is an integer number (305145).

2^1017145 is an apocalyptic number.

It is an amenable number.

1017145 is a deficient number, since it is larger than the sum of its proper divisors (203435).

1017145 is an equidigital number, since it uses as much as digits as its factorization.

1017145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203434.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 1017145 is about 1008.5360677735. The cubic root of 1017145 is about 100.5682646361.

The spelling of 1017145 in words is "one million, seventeen thousand, one hundred forty-five".