5621563261 has 8 divisors (see below), whose sum is σ = 5829924600. Its totient is φ = 5414169600.

The previous prime is 5621563249. The next prime is 5621563289. The reversal of 5621563261 is 1623651265.

5621563261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 766957636 + 4854605625 = 27694^2 + 69675^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5621563261 - 2⁵ = 5621563229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5621563261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621563201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230076 + ... + 253333.

It is an arithmetic number, because the mean of its divisors is an integer number (728740575).

Almost surely, 2^5621563261 is an apocalyptic number.

It is an amenable number.

5621563261 is a deficient number, since it is larger than the sum of its proper divisors (208361339).

5621563261 is a wasteful number, since it uses less digits than its factorization.

5621563261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483839.

The product of its digits is 64800, while the sum is 37.

The square root of 5621563261 is about 74977.0849059898. The cubic root of 5621563261 is about 1778.0843824871.

The spelling of 5621563261 in words is "five billion, six hundred twenty-one million, five hundred sixty-three thousand, two hundred sixty-one".