53288540 has 96 divisors (see below), whose sum is σ = 127552320. Its totient is φ = 18579456.

The previous prime is 53288519. The next prime is 53288593. The reversal of 53288540 is 4588235.

It is a super-3 number, since 3×53288540³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53288540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 471524 + ... + 471636.

It is an arithmetic number, because the mean of its divisors is an integer number (1328670).

Almost surely, 2^53288540 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 53288540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63776160).

53288540 is an abundant number, since it is smaller than the sum of its proper divisors (74263780).

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

53288540 is a wasteful number, since it uses less digits than its factorization.

53288540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 53288540 is about 7299.8999993151. The cubic root of 53288540 is about 376.3090016852.

The spelling of 53288540 in words is "fifty-three million, two hundred eighty-eight thousand, five hundred forty".