53643408 has 80 divisors (see below), whose sum is σ = 170572416. Its totient is φ = 14146560.

The previous prime is 53643407. The next prime is 53643409. The reversal of 53643408 is 80434635.

It is an interprime number because it is at equal distance from previous prime (53643407) and next prime (53643409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53643407) 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, 1773 + ... + 10508.

Almost surely, 2^53643408 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 53643408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85286208).

53643408 is an abundant number, since it is smaller than the sum of its proper divisors (116929008).

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

53643408 is a wasteful number, since it uses less digits than its factorization.

53643408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12312 (or 12306 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 53643408 is about 7324.1660276102. The cubic root of 53643408 is about 377.1424809782.

The spelling of 53643408 in words is "fifty-three million, six hundred forty-three thousand, four hundred eight".