5621261579 has 2 divisors, whose sum is σ = 5621261580. Its totient is φ = 5621261578.

The previous prime is 5621261561. The next prime is 5621261623. The reversal of 5621261579 is 9751621265.

It is a happy number.

5621261579 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (5621261623) can be obtained adding 5621261579 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5621261579 - 2⁸ = 5621261323 is a prime.

It is not a weakly prime, because it can be changed into another prime (5621261539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2810630789 + 2810630790.

It is an arithmetic number, because the mean of its divisors is an integer number (2810630790).

Almost surely, 2^5621261579 is an apocalyptic number.

5621261579 is a deficient number, since it is larger than the sum of its proper divisors (1).

5621261579 is an equidigital number, since it uses as much as digits as its factorization.

5621261579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 5621261579 is about 74975.0730509814. The cubic root of 5621261579 is about 1778.0525748668.

The spelling of 5621261579 in words is "five billion, six hundred twenty-one million, two hundred sixty-one thousand, five hundred seventy-nine".