53558406 has 48 divisors (see below), whose sum is σ = 128157120. Its totient is φ = 16029360.

The previous prime is 53558363. The next prime is 53558429. The reversal of 53558406 is 60485535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14805 + ... + 18063.

It is an arithmetic number, because the mean of its divisors is an integer number (2669940).

Almost surely, 2^53558406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53558406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64078560).

53558406 is an abundant number, since it is smaller than the sum of its proper divisors (74598714).

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

53558406 is a wasteful number, since it uses less digits than its factorization.

53558406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361 (or 3358 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 53558406 is about 7318.3608820555. The cubic root of 53558406 is about 376.9431721599.

The spelling of 53558406 in words is "fifty-three million, five hundred fifty-eight thousand, four hundred six".