7211345552 has 40 divisors (see below), whose sum is σ = 14485557240. Its totient is φ = 3473684480.

The previous prime is 7211345539. The next prime is 7211345569. The reversal of 7211345552 is 2555431127.

It can be written as a sum of positive squares in 4 ways, for example, as 87310336 + 7124035216 = 9344^2 + 84404^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197048 + ... + 230760.

It is an arithmetic number, because the mean of its divisors is an integer number (362138931).

Almost surely, 2^7211345552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7211345552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7242778620).

7211345552 is an abundant number, since it is smaller than the sum of its proper divisors (7274211688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7211345552 is a wasteful number, since it uses less digits than its factorization.

7211345552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34211 (or 34205 counting only the distinct ones).

The product of its digits is 42000, while the sum is 35.

The square root of 7211345552 is about 84919.6417326404. The cubic root of 7211345552 is about 1931.9924971167.

Adding to 7211345552 its reverse (2555431127), we get a palindrome (9766776679).

The spelling of 7211345552 in words is "seven billion, two hundred eleven million, three hundred forty-five thousand, five hundred fifty-two".