4220051272 has 8 divisors (see below), whose sum is σ = 7912596150. Its totient is φ = 2110025632.

The previous prime is 4220051249. The next prime is 4220051279. The reversal of 4220051272 is 2721500224.

It can be written as a sum of positive squares in only one way, i.e., 2476654756 + 1743396516 = 49766^2 + 41754^2 .

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

It is not an unprimeable number, because it can be changed into a prime (4220051279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263753197 + ... + 263753212.

Almost surely, 2^4220051272 is an apocalyptic number.

It is an amenable number.

4220051272 is a deficient number, since it is larger than the sum of its proper divisors (3692544878).

4220051272 is a wasteful number, since it uses less digits than its factorization.

4220051272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527506415 (or 527506411 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 4220051272 is about 64961.9217080283. The cubic root of 4220051272 is about 1615.9921341071.

Adding to 4220051272 its reverse (2721500224), we get a palindrome (6941551496).

The spelling of 4220051272 in words is "four billion, two hundred twenty million, fifty-one thousand, two hundred seventy-two".