2261530215 has 24 divisors (see below), whose sum is σ = 4479984288. Its totient is φ = 1033842240.

The previous prime is 2261530181. The next prime is 2261530237. The reversal of 2261530215 is 5120351622.

It is a happy number.

2261530215 is a `hidden beast` number, since 2 + 2 + 615 + 30 + 2 + 15 = 666.

2261530215 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2261530215 - 2¹⁰ = 2261529191 is a prime.

It is a super-2 number, since 2×2261530215² = 10229037826715892450, which contains 22 as substring.

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, 3589416 + ... + 3590045.

It is an arithmetic number, because the mean of its divisors is an integer number (186666012).

Almost surely, 2^2261530215 is an apocalyptic number.

2261530215 is a deficient number, since it is larger than the sum of its proper divisors (2218454073).

2261530215 is a wasteful number, since it uses less digits than its factorization.

2261530215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7179479 (or 7179476 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 2261530215 is about 47555.5487298801. The cubic root of 2261530215 is about 1312.6052334671.

Adding to 2261530215 its reverse (5120351622), we get a palindrome (7381881837).

The spelling of 2261530215 in words is "two billion, two hundred sixty-one million, five hundred thirty thousand, two hundred fifteen".