7700220052 has 18 divisors (see below), whose sum is σ = 15675448362. Its totient is φ = 3300094224.

The previous prime is 7700220049. The next prime is 7700220061. The reversal of 7700220052 is 2500220077.

It can be written as a sum of positive squares in only one way, i.e., 7471182096 + 229037956 = 86436^2 + 15134^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7700219999 and 7700220026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19643223 + ... + 19643614.

Almost surely, 2^7700220052 is an apocalyptic number.

It is an amenable number.

7700220052 is an abundant number, since it is smaller than the sum of its proper divisors (7975228310).

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

7700220052 is a wasteful number, since it uses less digits than its factorization.

7700220052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39286855 (or 39286846 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 7700220052 is about 87750.8977276016. The cubic root of 7700220052 is about 1974.6996329624.

Adding to 7700220052 its sum of digits (25), we get a palindrome (7700220077).

The spelling of 7700220052 in words is "seven billion, seven hundred million, two hundred twenty thousand, fifty-two".