2215345513 has 4 divisors (see below), whose sum is σ = 2215522260. Its totient is φ = 2215168768.

The previous prime is 2215345501. The next prime is 2215345519. The reversal of 2215345513 is 3155435122.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1812460329 + 402885184 = 42573^2 + 20072^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215345513 - 2²⁹ = 1678474601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2215345519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68008 + ... + 95161.

It is an arithmetic number, because the mean of its divisors is an integer number (553880565).

Almost surely, 2^2215345513 is an apocalyptic number.

It is an amenable number.

2215345513 is a deficient number, since it is larger than the sum of its proper divisors (176747).

2215345513 is a wasteful number, since it uses less digits than its factorization.

2215345513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176746.

The product of its digits is 18000, while the sum is 31.

The square root of 2215345513 is about 47067.4570483684. The cubic root of 2215345513 is about 1303.6084191969.

The spelling of 2215345513 in words is "two billion, two hundred fifteen million, three hundred forty-five thousand, five hundred thirteen".