53680536 has 128 divisors (see below), whose sum is σ = 183590400. Its totient is φ = 14152320.

The previous prime is 53680531. The next prime is 53680541. The reversal of 53680536 is 63508635.

It is an interprime number because it is at equal distance from previous prime (53680531) and next prime (53680541).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 53680536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53680531) 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, 18291 + ... + 21021.

It is an arithmetic number, because the mean of its divisors is an integer number (1434300).

Almost surely, 2^53680536 is an apocalyptic number.

53680536 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53680536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91795200).

53680536 is an abundant number, since it is smaller than the sum of its proper divisors (129909864).

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

53680536 is a wasteful number, since it uses less digits than its factorization.

53680536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766 (or 2756 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 53680536 is about 7326.7002122374. The cubic root of 53680536 is about 377.2294709570.

The spelling of 53680536 in words is "fifty-three million, six hundred eighty thousand, five hundred thirty-six".