53020144 has 40 divisors (see below), whose sum is σ = 109265328. Its totient is φ = 24837120.

The previous prime is 53020133. The next prime is 53020147. The reversal of 53020144 is 44102035.

It is a super-2 number, since 2×53020144² = 5622271339561472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53020147) by changing a digit.

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, 107739 + ... + 108229.

Almost surely, 2^53020144 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 53020144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54632664).

53020144 is an abundant number, since it is smaller than the sum of its proper divisors (56245184).

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

53020144 is a wasteful number, since it uses less digits than its factorization.

53020144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 53020144 is about 7281.4932534474. The cubic root of 53020144 is about 375.6761584636.

Adding to 53020144 its reverse (44102035), we get a palindrome (97122179).

The spelling of 53020144 in words is "fifty-three million, twenty thousand, one hundred forty-four".