2541520215 has 24 divisors (see below), whose sum is σ = 4744172160. Its totient is φ = 1251209664.

The previous prime is 2541520193. The next prime is 2541520229. The reversal of 2541520215 is 5120251452.

It is not a de Polignac number, because 2541520215 - 2¹⁹ = 2540995927 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2171655 + ... + 2172824.

It is an arithmetic number, because the mean of its divisors is an integer number (197673840).

Almost surely, 2^2541520215 is an apocalyptic number.

2541520215 is a deficient number, since it is larger than the sum of its proper divisors (2202651945).

2541520215 is a wasteful number, since it uses less digits than its factorization.

2541520215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344503 (or 4344500 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 2541520215 is about 50413.4923904306. The cubic root of 2541520215 is about 1364.6811395449.

Adding to 2541520215 its reverse (5120251452), we get a palindrome (7661771667).

The spelling of 2541520215 in words is "two billion, five hundred forty-one million, five hundred twenty thousand, two hundred fifteen".