2215450715 has 4 divisors (see below), whose sum is σ = 2658540864. Its totient is φ = 1772360568.

The previous prime is 2215450639. The next prime is 2215450733. The reversal of 2215450715 is 5170545122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2215450715 is a prime.

It is a super-2 number, since 2×2215450715² = 9816443741188022450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221545067 + ... + 221545076.

It is an arithmetic number, because the mean of its divisors is an integer number (664635216).

Almost surely, 2^2215450715 is an apocalyptic number.

2215450715 is a deficient number, since it is larger than the sum of its proper divisors (443090149).

2215450715 is an equidigital number, since it uses as much as digits as its factorization.

2215450715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443090148.

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 2215450715 is about 47068.5746013197. The cubic root of 2215450715 is about 1303.6290540582.

Adding to 2215450715 its reverse (5170545122), we get a palindrome (7385995837).

The spelling of 2215450715 in words is "two billion, two hundred fifteen million, four hundred fifty thousand, seven hundred fifteen".