2515121 has 6 divisors (see below), whose sum is σ = 2925810. Its totient is φ = 2155776.

The previous prime is 2515103. The next prime is 2515127. The reversal of 2515121 is 1215152.

It can be written as a sum of positive squares in only one way, i.e., 2436721 + 78400 = 1561^2 + 280^2 .

It is not a de Polignac number, because 2515121 - 2¹⁴ = 2498737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2515121.

It is not an unprimeable number, because it can be changed into a prime (2515127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25616 + ... + 25713.

It is an arithmetic number, because the mean of its divisors is an integer number (487635).

2^2515121 is an apocalyptic number.

It is an amenable number.

2515121 is a deficient number, since it is larger than the sum of its proper divisors (410689).

2515121 is an equidigital number, since it uses as much as digits as its factorization.

2515121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51343 (or 51336 counting only the distinct ones).

The product of its digits is 100, while the sum is 17.

The square root of 2515121 is about 1585.9133015395. The cubic root of 2515121 is about 135.9939623906.

The spelling of 2515121 in words is "two million, five hundred fifteen thousand, one hundred twenty-one".