5771973621 has 4 divisors (see below), whose sum is σ = 7695964832. Its totient is φ = 3847982412.

The previous prime is 5771973611. The next prime is 5771973629. The reversal of 5771973621 is 1263791775.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5771973621 - 2⁵ = 5771973589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5771973629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 961995601 + ... + 961995606.

It is an arithmetic number, because the mean of its divisors is an integer number (1923991208).

Almost surely, 2^5771973621 is an apocalyptic number.

It is an amenable number.

5771973621 is a deficient number, since it is larger than the sum of its proper divisors (1923991211).

5771973621 is a wasteful number, since it uses less digits than its factorization.

5771973621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923991210.

The product of its digits is 555660, while the sum is 48.

The square root of 5771973621 is about 75973.5060465160. The cubic root of 5771973621 is about 1793.8031371374.

The spelling of 5771973621 in words is "five billion, seven hundred seventy-one million, nine hundred seventy-three thousand, six hundred twenty-one".