2261542615 has 4 divisors (see below), whose sum is σ = 2713851144. Its totient is φ = 1809234088.

The previous prime is 2261542579. The next prime is 2261542627. The reversal of 2261542615 is 5162451622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2261542615 - 2¹³ = 2261534423 is a prime.

It is a super-2 number, since 2×2261542615² = 10229149998922076450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226154257 + ... + 226154266.

It is an arithmetic number, because the mean of its divisors is an integer number (678462786).

Almost surely, 2^2261542615 is an apocalyptic number.

2261542615 is a deficient number, since it is larger than the sum of its proper divisors (452308529).

2261542615 is an equidigital number, since it uses as much as digits as its factorization.

2261542615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452308528.

The product of its digits is 28800, while the sum is 34.

The square root of 2261542615 is about 47555.6791035519. The cubic root of 2261542615 is about 1312.6076324734.

The spelling of 2261542615 in words is "two billion, two hundred sixty-one million, five hundred forty-two thousand, six hundred fifteen".