2155017 has 8 divisors (see below), whose sum is σ = 2886624. Its totient is φ = 1430048.

The previous prime is 2155009. The next prime is 2155057. The reversal of 2155017 is 7105512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2155017 - 2³ = 2155009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2154984 and 2155002.

It is not an unprimeable number, because it can be changed into a prime (2155007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843 + ... + 2240.

It is an arithmetic number, because the mean of its divisors is an integer number (360828).

2^2155017 is an apocalyptic number.

It is an amenable number.

2155017 is a deficient number, since it is larger than the sum of its proper divisors (731607).

2155017 is a wasteful number, since it uses less digits than its factorization.

2155017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3319.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 2155017 is about 1467.9976158019. The cubic root of 2155017 is about 129.1666016418.

The spelling of 2155017 in words is "two million, one hundred fifty-five thousand, seventeen".