53014640 has 80 divisors (see below), whose sum is σ = 144365760. Its totient is φ = 17725440.

The previous prime is 53014613. The next prime is 53014649. The reversal of 53014640 is 4641035.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53014649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21806 + ... + 24114.

It is an arithmetic number, because the mean of its divisors is an integer number (1804572).

Almost surely, 2^53014640 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 53014640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72182880).

53014640 is an abundant number, since it is smaller than the sum of its proper divisors (91351120).

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

53014640 is a wasteful number, since it uses less digits than its factorization.

53014640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370 (or 2364 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 53014640 is about 7281.1152991832. The cubic root of 53014640 is about 375.6631584163.

Adding to 53014640 its reverse (4641035), we get a palindrome (57655675).

The spelling of 53014640 in words is "fifty-three million, fourteen thousand, six hundred forty".