2261555465 has 24 divisors (see below), whose sum is σ = 3093373440. Its totient is φ = 1582161984.

The previous prime is 2261555393. The next prime is 2261555489. The reversal of 2261555465 is 5645551622.

It is not a de Polignac number, because 2261555465 - 2¹⁴ = 2261539081 is a prime.

It is a super-2 number, since 2×2261555465² = 10229266242542732450, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54377 + ... + 86486.

It is an arithmetic number, because the mean of its divisors is an integer number (128890560).

Almost surely, 2^2261555465 is an apocalyptic number.

It is an amenable number.

2261555465 is a deficient number, since it is larger than the sum of its proper divisors (831817975).

2261555465 is a wasteful number, since it uses less digits than its factorization.

2261555465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140913 (or 140900 counting only the distinct ones).

The product of its digits is 360000, while the sum is 41.

The square root of 2261555465 is about 47555.8142081491. The cubic root of 2261555465 is about 1312.6101185310.

The spelling of 2261555465 in words is "two billion, two hundred sixty-one million, five hundred fifty-five thousand, four hundred sixty-five".