53303540 has 12 divisors (see below), whose sum is σ = 111937476. Its totient is φ = 21321408.

The previous prime is 53303501. The next prime is 53303557. The reversal of 53303540 is 4530335.

It can be written as a sum of positive squares in 2 ways, for example, as 29116816 + 24186724 = 5396^2 + 4918^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332569 + ... + 1332608.

It is an arithmetic number, because the mean of its divisors is an integer number (9328123).

Almost surely, 2^53303540 is an apocalyptic number.

It is an amenable number.

53303540 is an abundant number, since it is smaller than the sum of its proper divisors (58633936).

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

53303540 is a wasteful number, since it uses less digits than its factorization.

53303540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665186 (or 2665184 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 23.

The square root of 53303540 is about 7300.9273383591. The cubic root of 53303540 is about 376.3443069965.

Adding to 53303540 its reverse (4530335), we get a palindrome (57833875).

The spelling of 53303540 in words is "fifty-three million, three hundred three thousand, five hundred forty".