2149515 has 24 divisors (see below), whose sum is σ = 3829488. Its totient is φ = 1114560.

The previous prime is 2149501. The next prime is 2149517. The reversal of 2149515 is 5159412.

2149515 is a `hidden beast` number, since 2 + 149 + 515 = 666.

It is not a de Polignac number, because 2149515 - 2⁹ = 2149003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2149517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1020 + ... + 2310.

It is an arithmetic number, because the mean of its divisors is an integer number (159562).

2^2149515 is an apocalyptic number.

2149515 is a deficient number, since it is larger than the sum of its proper divisors (1679973).

2149515 is a wasteful number, since it uses less digits than its factorization.

2149515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339 (or 1336 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 2149515 is about 1466.1224369063. The cubic root of 2149515 is about 129.0565823531.

The spelling of 2149515 in words is "two million, one hundred forty-nine thousand, five hundred fifteen".