5252221520544 has 96 divisors (see below), whose sum is σ = 13865094782784. Its totient is φ = 1740842680320.

The previous prime is 5252221520501. The next prime is 5252221520551. The reversal of 5252221520544 is 4450251222525.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39602247 + ... + 39734649.

It is an arithmetic number, because the mean of its divisors is an integer number (144428070654).

Almost surely, 2^{5252221520544} 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 5252221520544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6932547391392).

5252221520544 is an abundant number, since it is smaller than the sum of its proper divisors (8612873262240).

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

5252221520544 is a wasteful number, since it uses less digits than its factorization.

5252221520544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134750 (or 134742 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 39.

The spelling of 5252221520544 in words is "five trillion, two hundred fifty-two billion, two hundred twenty-one million, five hundred twenty thousand, five hundred forty-four".