5515223211 has 6 divisors (see below), whose sum is σ = 7966433540. Its totient is φ = 3676815468.

The previous prime is 5515223209. The next prime is 5515223213. The reversal of 5515223211 is 1123225155.

It is an interprime number because it is at equal distance from previous prime (5515223209) and next prime (5515223213).

It is not a de Polignac number, because 5515223211 - 2¹ = 5515223209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5515223213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306401281 + ... + 306401298.

Almost surely, 2^5515223211 is an apocalyptic number.

5515223211 is a deficient number, since it is larger than the sum of its proper divisors (2451210329).

5515223211 is a wasteful number, since it uses less digits than its factorization.

5515223211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612802585 (or 612802582 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 5515223211 is about 74264.5488170500. The cubic root of 5515223211 is about 1766.8012503659.

Adding to 5515223211 its reverse (1123225155), we get a palindrome (6638448366).

The spelling of 5515223211 in words is "five billion, five hundred fifteen million, two hundred twenty-three thousand, two hundred eleven".