53143552 has 96 divisors (see below), whose sum is σ = 132874560. Its totient is φ = 20643840.

The previous prime is 53143543. The next prime is 53143553. The reversal of 53143552 is 25534135.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 53143552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53143553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157528 + ... + 157864.

It is an arithmetic number, because the mean of its divisors is an integer number (1384110).

Almost surely, 2^53143552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53143552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66437280).

53143552 is an abundant number, since it is smaller than the sum of its proper divisors (79731008).

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

53143552 is a wasteful number, since it uses less digits than its factorization.

53143552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 357 counting only the distinct ones).

The product of its digits is 9000, while the sum is 28.

The square root of 53143552 is about 7289.9624141692. The cubic root of 53143552 is about 375.9674032402.

Adding to 53143552 its reverse (25534135), we get a palindrome (78677687).

The spelling of 53143552 in words is "fifty-three million, one hundred forty-three thousand, five hundred fifty-two".