52220312 has 8 divisors (see below), whose sum is σ = 97913100. Its totient is φ = 26110152.

The previous prime is 52220309. The next prime is 52220323. The reversal of 52220312 is 21302225.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3263762 + ... + 3263777.

Almost surely, 2^52220312 is an apocalyptic number.

It is an amenable number.

52220312 is a deficient number, since it is larger than the sum of its proper divisors (45692788).

52220312 is a wasteful number, since it uses less digits than its factorization.

52220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6527545 (or 6527541 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 52220312 is about 7226.3622937132. The cubic root of 52220312 is about 373.7774992723. Note that the first 3 decimals are identical.

Adding to 52220312 its reverse (21302225), we get a palindrome (73522537).

The spelling of 52220312 in words is "fifty-two million, two hundred twenty thousand, three hundred twelve".