53345140 has 24 divisors (see below), whose sum is σ = 113605632. Its totient is φ = 21036960.

The previous prime is 53345137. The next prime is 53345161. The reversal of 53345140 is 4154335.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17364 + ... + 20203.

It is an arithmetic number, because the mean of its divisors is an integer number (4733568).

Almost surely, 2^53345140 is an apocalyptic number.

It is an amenable number.

53345140 is an abundant number, since it is smaller than the sum of its proper divisors (60260492).

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

53345140 is a wasteful number, since it uses less digits than its factorization.

53345140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37647 (or 37645 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 53345140 is about 7303.7757358780. The cubic root of 53345140 is about 376.4421857498.

Adding to 53345140 its reverse (4154335), we get a palindrome (57499475).

The spelling of 53345140 in words is "fifty-three million, three hundred forty-five thousand, one hundred forty".