2149517 has 2 divisors, whose sum is σ = 2149518. Its totient is φ = 2149516.

The previous prime is 2149501. The next prime is 2149559. The reversal of 2149517 is 7159412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2149156 + 361 = 1466^2 + 19^2 .

It is a cyclic number.

It is not a de Polignac number, because 2149517 - 2⁴ = 2149501 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2149517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2149117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074758 + 1074759.

It is an arithmetic number, because the mean of its divisors is an integer number (1074759).

2^2149517 is an apocalyptic number.

It is an amenable number.

2149517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149517 is an equidigital number, since it uses as much as digits as its factorization.

2149517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 29.

The square root of 2149517 is about 1466.1231189774. The cubic root of 2149517 is about 129.0566223797.

It can be divided in two parts, 21495 and 17, that added together give a palindrome (21512).

The spelling of 2149517 in words is "two million, one hundred forty-nine thousand, five hundred seventeen".