52221404 has 6 divisors (see below), whose sum is σ = 91387464. Its totient is φ = 26110700.

The previous prime is 52221397. The next prime is 52221409. The reversal of 52221404 is 40412225.

It is a happy number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52221409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6527672 + ... + 6527679.

It is an arithmetic number, because the mean of its divisors is an integer number (15231244).

Almost surely, 2^52221404 is an apocalyptic number.

It is an amenable number.

52221404 is a deficient number, since it is larger than the sum of its proper divisors (39166060).

52221404 is a wasteful number, since it uses less digits than its factorization.

52221404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13055355 (or 13055353 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 52221404 is about 7226.4378500060. The cubic root of 52221404 is about 373.7801046581.

Adding to 52221404 its reverse (40412225), we get a palindrome (92633629).

It can be divided in two parts, 52221 and 404, that added together give a palindrome (52625).

The spelling of 52221404 in words is "fifty-two million, two hundred twenty-one thousand, four hundred four".