53527220 has 24 divisors (see below), whose sum is σ = 119020104. Its totient is φ = 20151296.

The previous prime is 53527213. The next prime is 53527241. The reversal of 53527220 is 2272535.

It can be written as a sum of positive squares in 4 ways, for example, as 19678096 + 33849124 = 4436^2 + 5818^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53527220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78377 + ... + 79056.

It is an arithmetic number, because the mean of its divisors is an integer number (4959171).

Almost surely, 2^53527220 is an apocalyptic number.

It is an amenable number.

53527220 is an abundant number, since it is smaller than the sum of its proper divisors (65492884).

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

53527220 is a wasteful number, since it uses less digits than its factorization.

53527220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157459 (or 157457 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 53527220 is about 7316.2299034407. The cubic root of 53527220 is about 376.8699957716.

Adding to 53527220 its reverse (2272535), we get a palindrome (55799755).

The spelling of 53527220 in words is "fifty-three million, five hundred twenty-seven thousand, two hundred twenty".