5621044261 has 24 divisors (see below), whose sum is σ = 6720673920. Its totient is φ = 4685833152.

The previous prime is 5621044259. The next prime is 5621044301. The reversal of 5621044261 is 1624401265.

It is a happy number.

It is not a de Polignac number, because 5621044261 - 2¹ = 5621044259 is a prime.

It is a super-2 number, since 2×5621044261² = 63192277168242072242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621044211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248521 + ... + 270193.

It is an arithmetic number, because the mean of its divisors is an integer number (280028080).

Almost surely, 2^5621044261 is an apocalyptic number.

It is an amenable number.

5621044261 is a deficient number, since it is larger than the sum of its proper divisors (1099629659).

5621044261 is a wasteful number, since it uses less digits than its factorization.

5621044261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21833 (or 21826 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 5621044261 is about 74973.6237686295. The cubic root of 5621044261 is about 1778.0296613978.

The spelling of 5621044261 in words is "five billion, six hundred twenty-one million, forty-four thousand, two hundred sixty-one".