53288340 has 96 divisors (see below), whose sum is σ = 173021184. Its totient is φ = 12001920.

The previous prime is 53288327. The next prime is 53288351. The reversal of 53288340 is 4388235.

53288340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28927 + ... + 30713.

It is an arithmetic number, because the mean of its divisors is an integer number (1802304).

Almost surely, 2^53288340 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 53288340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86510592).

53288340 is an abundant number, since it is smaller than the sum of its proper divisors (119732844).

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

53288340 is a wasteful number, since it uses less digits than its factorization.

53288340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877 (or 1875 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 53288340 is about 7299.8863004844. The cubic root of 53288340 is about 376.3085309030.

It can be divided in two parts, 53288 and 340, that added together give a triangular number (53628 = T₃₂₇).

The spelling of 53288340 in words is "fifty-three million, two hundred eighty-eight thousand, three hundred forty".