5242655255621 has 32 divisors (see below), whose sum is σ = 6302835576576. Its totient is φ = 4266904320000.

The previous prime is 5242655255611. The next prime is 5242655255653. The reversal of 5242655255621 is 1265525562425.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-5242655255621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5242655255621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5242655255611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2711921 + ... + 4223721.

It is an arithmetic number, because the mean of its divisors is an integer number (196963611768).

Almost surely, 2^{5242655255621} is an apocalyptic number.

It is an amenable number.

5242655255621 is a deficient number, since it is larger than the sum of its proper divisors (1060180320955).

5242655255621 is a wasteful number, since it uses less digits than its factorization.

5242655255621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512173.

The product of its digits is 7200000, while the sum is 50.

The spelling of 5242655255621 in words is "five trillion, two hundred forty-two billion, six hundred fifty-five million, two hundred fifty-five thousand, six hundred twenty-one".