53835440 has 20 divisors (see below), whose sum is σ = 125167584. Its totient is φ = 21534144.

The previous prime is 53835409. The next prime is 53835449. The reversal of 53835440 is 4453835.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 53835397 and 53835406.

It is not an unprimeable number, because it can be changed into a prime (53835449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336392 + ... + 336551.

Almost surely, 2^53835440 is an apocalyptic number.

It is an amenable number.

53835440 is an abundant number, since it is smaller than the sum of its proper divisors (71332144).

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

53835440 is a wasteful number, since it uses less digits than its factorization.

53835440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672956 (or 672950 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 53835440 is about 7337.2637951760. The cubic root of 53835440 is about 377.5919750162.

The spelling of 53835440 in words is "fifty-three million, eight hundred thirty-five thousand, four hundred forty".