53235440 has 40 divisors (see below), whose sum is σ = 124151280. Its totient is φ = 21229056.

The previous prime is 53235437. The next prime is 53235451. The reversal of 53235440 is 4453235.

53235440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

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, 31907 + ... + 33533.

It is an arithmetic number, because the mean of its divisors is an integer number (3103782).

Almost surely, 2^53235440 is an apocalyptic number.

It is an amenable number.

53235440 is an abundant number, since it is smaller than the sum of its proper divisors (70915840).

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

53235440 is a wasteful number, since it uses less digits than its factorization.

53235440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049 (or 2043 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 53235440 is about 7296.2620566973. The cubic root of 53235440 is about 376.1839676174.

Adding to 53235440 its reverse (4453235), we get a palindrome (57688675).

The spelling of 53235440 in words is "fifty-three million, two hundred thirty-five thousand, four hundred forty".