53558244 has 72 divisors (see below), whose sum is σ = 142516920. Its totient is φ = 16954560.

The previous prime is 53558231. The next prime is 53558251. The reversal of 53558244 is 44285535.

53558244 is a `hidden beast` number, since 5 + 35 + 582 + 44 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3686400 + 49871844 = 1920^2 + 7062^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 53558199 and 53558208.

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, 877974 + ... + 878034.

Almost surely, 2^53558244 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 53558244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71258460).

53558244 is an abundant number, since it is smaller than the sum of its proper divisors (88958676).

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

53558244 is a wasteful number, since it uses less digits than its factorization.

53558244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 95 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The square root of 53558244 is about 7318.3498139950. The cubic root of 53558244 is about 376.9427921084.

The spelling of 53558244 in words is "fifty-three million, five hundred fifty-eight thousand, two hundred forty-four".