5661922571 has 2 divisors, whose sum is σ = 5661922572. Its totient is φ = 5661922570.

The previous prime is 5661922547. The next prime is 5661922577. The reversal of 5661922571 is 1752291665.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5661922571 - 2⁶ = 5661922507 is a prime.

It is not a weakly prime, because it can be changed into another prime (5661922577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830961285 + 2830961286.

It is an arithmetic number, because the mean of its divisors is an integer number (2830961286).

Almost surely, 2^5661922571 is an apocalyptic number.

5661922571 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661922571 is an equidigital number, since it uses as much as digits as its factorization.

5661922571 is an odious number, because the sum of its binary digits is odd.

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

The square root of 5661922571 is about 75245.7478599289. The cubic root of 5661922571 is about 1782.3294178470.

The spelling of 5661922571 in words is "five billion, six hundred sixty-one million, nine hundred twenty-two thousand, five hundred seventy-one".