5621552244 has 216 divisors, whose sum is σ = 18114497856. Its totient is φ = 1453536000.

The previous prime is 5621552213. The next prime is 5621552267. The reversal of 5621552244 is 4422551265.

5621552244 is a `hidden beast` number, since 5 + 62 + 1 + 552 + 2 + 44 = 666.

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 = 5621552199 and 5621552208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5452009 + ... + 5453039.

It is an arithmetic number, because the mean of its divisors is an integer number (83863416).

Almost surely, 2^5621552244 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 5621552244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9057248928).

5621552244 is an abundant number, since it is smaller than the sum of its proper divisors (12492945612).

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

5621552244 is a wasteful number, since it uses less digits than its factorization.

5621552244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347 (or 1335 counting only the distinct ones).

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

The square root of 5621552244 is about 74977.0114368398. The cubic root of 5621552244 is about 1778.0832209378.

The spelling of 5621552244 in words is "five billion, six hundred twenty-one million, five hundred fifty-two thousand, two hundred forty-four".