2151017 has 12 divisors (see below), whose sum is σ = 2449860. Its totient is φ = 1884960.

The previous prime is 2151013. The next prime is 2151031. The reversal of 2151017 is 7101512.

It can be written as a sum of positive squares in 2 ways, for example, as 379456 + 1771561 = 616^2 + 1331^2 .

It is not a de Polignac number, because 2151017 - 2² = 2151013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2150986 and 2151004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151011) 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, 3203 + ... + 3815.

It is an arithmetic number, because the mean of its divisors is an integer number (204155).

2^2151017 is an apocalyptic number.

It is an amenable number.

2151017 is a deficient number, since it is larger than the sum of its proper divisors (298843).

2151017 is a wasteful number, since it uses less digits than its factorization.

2151017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 2151017 is about 1466.6345829824. The cubic root of 2151017 is about 129.0866353114.

Adding to 2151017 its reverse (7101512), we get a palindrome (9252529).

The spelling of 2151017 in words is "two million, one hundred fifty-one thousand, seventeen".