53669856 has 96 divisors (see below), whose sum is σ = 149022720. Its totient is φ = 16879104.

The previous prime is 53669843. The next prime is 53669857. The reversal of 53669856 is 65896635.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

Its product of digits (1166400) is a multiple of the sum of its prime divisors (360).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53669857) 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, 240561 + ... + 240783.

It is an arithmetic number, because the mean of its divisors is an integer number (1552320).

Almost surely, 2^53669856 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 53669856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74511360).

53669856 is an abundant number, since it is smaller than the sum of its proper divisors (95352864).

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

53669856 is a wasteful number, since it uses less digits than its factorization.

53669856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 360 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 48.

The square root of 53669856 is about 7325.9713349153. The cubic root of 53669856 is about 377.2044520938.

The spelling of 53669856 in words is "fifty-three million, six hundred sixty-nine thousand, eight hundred fifty-six".