53443356 has 12 divisors (see below), whose sum is σ = 124701192. Its totient is φ = 17814448.

The previous prime is 53443337. The next prime is 53443361. The reversal of 53443356 is 65334435.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2226795 + ... + 2226818.

It is an arithmetic number, because the mean of its divisors is an integer number (10391766).

Almost surely, 2^53443356 is an apocalyptic number.

It is an amenable number.

53443356 is an abundant number, since it is smaller than the sum of its proper divisors (71257836).

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

53443356 is a wasteful number, since it uses less digits than its factorization.

53443356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453620 (or 4453618 counting only the distinct ones).

The product of its digits is 64800, while the sum is 33.

The square root of 53443356 is about 7310.4962895825. The cubic root of 53443356 is about 376.6730720015.

The spelling of 53443356 in words is "fifty-three million, four hundred forty-three thousand, three hundred fifty-six".