53256040 has 64 divisors (see below), whose sum is σ = 126437760. Its totient is φ = 20148480.

The previous prime is 53256001. The next prime is 53256041. The reversal of 53256040 is 4065235.

It is a junction number, because it is equal to n+sod(n) for n = 53255996 and 53256014.

It is not an unprimeable number, because it can be changed into a prime (53256041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98170 + ... + 98710.

It is an arithmetic number, because the mean of its divisors is an integer number (1975590).

Almost surely, 2^53256040 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 53256040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63218880).

53256040 is an abundant number, since it is smaller than the sum of its proper divisors (73181720).

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

53256040 is a wasteful number, since it uses less digits than its factorization.

53256040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 53256040 is about 7297.6736019090. The cubic root of 53256040 is about 376.2324841093.

The spelling of 53256040 in words is "fifty-three million, two hundred fifty-six thousand, forty".