52220361 has 16 divisors (see below), whose sum is σ = 71527104. Its totient is φ = 33870144.

The previous prime is 52220359. The next prime is 52220383. The reversal of 52220361 is 16302225.

52220361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52220361 - 2¹ = 52220359 is a prime.

It is a super-2 number, since 2×52220361² = 5453932205940642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52220761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40255 + ... + 41531.

It is an arithmetic number, because the mean of its divisors is an integer number (4470444).

Almost surely, 2^52220361 is an apocalyptic number.

It is an amenable number.

52220361 is a deficient number, since it is larger than the sum of its proper divisors (19306743).

52220361 is a wasteful number, since it uses less digits than its factorization.

52220361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 52220361 is about 7226.3656840766. The cubic root of 52220361 is about 373.7776161814. Note that the first 3 decimals are identical.

Adding to 52220361 its reverse (16302225), we get a palindrome (68522586).

The spelling of 52220361 in words is "fifty-two million, two hundred twenty thousand, three hundred sixty-one".