2061515 has 4 divisors (see below), whose sum is σ = 2473824. Its totient is φ = 1649208.

The previous prime is 2061503. The next prime is 2061533. The reversal of 2061515 is 5151602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5151602 = 2 ⋅2575801.

It is a cyclic number.

It is not a de Polignac number, because 2061515 - 2¹⁶ = 1995979 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206147 + ... + 206156.

It is an arithmetic number, because the mean of its divisors is an integer number (618456).

2^2061515 is an apocalyptic number.

2061515 is a deficient number, since it is larger than the sum of its proper divisors (412309).

2061515 is an equidigital number, since it uses as much as digits as its factorization.

2061515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412308.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 2061515 is about 1435.7976876984. The cubic root of 2061515 is about 127.2708173028.

The spelling of 2061515 in words is "two million, sixty-one thousand, five hundred fifteen".