2215255261 has 8 divisors (see below), whose sum is σ = 2346520320. Its totient is φ = 2084096448.

The previous prime is 2215255253. The next prime is 2215255271. The reversal of 2215255261 is 1625525122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2215255261 - 2³ = 2215255253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215255271) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18580 + ... + 69106.

It is an arithmetic number, because the mean of its divisors is an integer number (293315040).

Almost surely, 2^2215255261 is an apocalyptic number.

It is an amenable number.

2215255261 is a deficient number, since it is larger than the sum of its proper divisors (131265059).

2215255261 is a wasteful number, since it uses less digits than its factorization.

2215255261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53123.

The product of its digits is 12000, while the sum is 31.

The square root of 2215255261 is about 47066.4982869982. The cubic root of 2215255261 is about 1303.5907161849.

The spelling of 2215255261 in words is "two billion, two hundred fifteen million, two hundred fifty-five thousand, two hundred sixty-one".