53543406 has 64 divisors (see below), whose sum is σ = 129830400. Its totient is φ = 14380416.

The previous prime is 53543389. The next prime is 53543407. The reversal of 53543406 is 60434535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53543407) 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, 182596 + ... + 182888.

It is an arithmetic number, because the mean of its divisors is an integer number (2028600).

Almost surely, 2^53543406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53543406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64915200).

53543406 is an abundant number, since it is smaller than the sum of its proper divisors (76286994).

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

53543406 is a wasteful number, since it uses less digits than its factorization.

53543406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553.

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 53543406 is about 7317.3359906458. The cubic root of 53543406 is about 376.9079789572.

The spelling of 53543406 in words is "fifty-three million, five hundred forty-three thousand, four hundred six".