53322140 has 24 divisors (see below), whose sum is σ = 114709392. Its totient is φ = 20808320.

The previous prime is 53322133. The next prime is 53322163. The reversal of 53322140 is 4122335.

It is a happy number.

53322140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×53322140² = 5686501228359200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 7 ways as a sum of consecutive naturals, for example, 31694 + ... + 33333.

It is an arithmetic number, because the mean of its divisors is an integer number (4779558).

Almost surely, 2^53322140 is an apocalyptic number.

It is an amenable number.

53322140 is an abundant number, since it is smaller than the sum of its proper divisors (61387252).

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

53322140 is a wasteful number, since it uses less digits than its factorization.

53322140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65077 (or 65075 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 53322140 is about 7302.2010380433. The cubic root of 53322140 is about 376.3880763851.

Adding to 53322140 its reverse (4122335), we get a palindrome (57444475).

The spelling of 53322140 in words is "fifty-three million, three hundred twenty-two thousand, one hundred forty".