5761729921 has 2 divisors, whose sum is σ = 5761729922. Its totient is φ = 5761729920.

The previous prime is 5761729907. The next prime is 5761729927. The reversal of 5761729921 is 1299271675.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4108169025 + 1653560896 = 64095^2 + 40664^2 .

It is a cyclic number.

It is not a de Polignac number, because 5761729921 - 2¹³ = 5761721729 is a prime.

It is not a weakly prime, because it can be changed into another prime (5761729927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2880864960 + 2880864961.

It is an arithmetic number, because the mean of its divisors is an integer number (2880864961).

Almost surely, 2^5761729921 is an apocalyptic number.

It is an amenable number.

5761729921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5761729921 is an equidigital number, since it uses as much as digits as its factorization.

5761729921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 49.

The square root of 5761729921 is about 75906.0598437305. The cubic root of 5761729921 is about 1792.7413361275.

The spelling of 5761729921 in words is "five billion, seven hundred sixty-one million, seven hundred twenty-nine thousand, nine hundred twenty-one".