6241550621 has 4 divisors (see below), whose sum is σ = 6242923644. Its totient is φ = 6240177600.

The previous prime is 6241550617. The next prime is 6241550647. The reversal of 6241550621 is 1260551426.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1260551426 = 2 ⋅630275713.

It can be written as a sum of positive squares in 2 ways, for example, as 4437424996 + 1804125625 = 66614^2 + 42475^2 .

It is a cyclic number.

It is not a de Polignac number, because 6241550621 - 2² = 6241550617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6241552621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 679670 + ... + 688791.

It is an arithmetic number, because the mean of its divisors is an integer number (1560730911).

Almost surely, 2^6241550621 is an apocalyptic number.

It is an amenable number.

6241550621 is a deficient number, since it is larger than the sum of its proper divisors (1373023).

6241550621 is a wasteful number, since it uses less digits than its factorization.

6241550621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373022.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 6241550621 is about 79003.4848661754. The cubic root of 6241550621 is about 1841.1853008896.

The spelling of 6241550621 in words is "six billion, two hundred forty-one million, five hundred fifty thousand, six hundred twenty-one".