53021124 has 72 divisors (see below), whose sum is σ = 145210520. Its totient is φ = 16215552.

The previous prime is 53021119. The next prime is 53021173. The reversal of 53021124 is 42112035.

It can be written as a sum of positive squares in 4 ways, for example, as 3572100 + 49449024 = 1890^2 + 7032^2 .

It is a super-2 number, since 2×53021124² = 5622479180446752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 53021097 and 53021106.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129432 + ... + 129840.

Almost surely, 2^53021124 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 53021124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72605260).

53021124 is an abundant number, since it is smaller than the sum of its proper divisors (92189396).

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

53021124 is a wasteful number, since it uses less digits than its factorization.

53021124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 704 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 53021124 is about 7281.5605470256. The cubic root of 53021124 is about 375.6784730578.

Adding to 53021124 its reverse (42112035), we get a palindrome (95133159).

The spelling of 53021124 in words is "fifty-three million, twenty-one thousand, one hundred twenty-four".