53235840 has 256 divisors, whose sum is σ = 206219520. Its totient is φ = 11403264.

The previous prime is 53235829. The next prime is 53235841. The reversal of 53235840 is 4853235.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 53235798 and 53235807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53235841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228364 + ... + 228596.

It is an arithmetic number, because the mean of its divisors is an integer number (805545).

Almost surely, 2^53235840 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 53235840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103109760).

53235840 is an abundant number, since it is smaller than the sum of its proper divisors (152983680).

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

53235840 is a wasteful number, since it uses less digits than its factorization.

53235840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 53235840 is about 7296.2894679419. The cubic root of 53235840 is about 376.1849098044.

The spelling of 53235840 in words is "fifty-three million, two hundred thirty-five thousand, eight hundred forty".