52220424 has 16 divisors (see below), whose sum is σ = 130551120. Its totient is φ = 17406800.

The previous prime is 52220411. The next prime is 52220437. The reversal of 52220424 is 42402225.

It is an interprime number because it is at equal distance from previous prime (52220411) and next prime (52220437).

It is a self number, because there is not a number n which added to its sum of digits gives 52220424.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1087902 + ... + 1087949.

It is an arithmetic number, because the mean of its divisors is an integer number (8159445).

Almost surely, 2^52220424 is an apocalyptic number.

It is an amenable number.

52220424 is an abundant number, since it is smaller than the sum of its proper divisors (78330696).

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

52220424 is a wasteful number, since it uses less digits than its factorization.

52220424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175860 (or 2175856 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 52220424 is about 7226.3700431129. The cubic root of 52220424 is about 373.7777664930. Note that the first 4 decimals are identical.

Adding to 52220424 its reverse (42402225), we get a palindrome (94622649).

The spelling of 52220424 in words is "fifty-two million, two hundred twenty thousand, four hundred twenty-four".