2057172771 has 8 divisors (see below), whose sum is σ = 2904243984. Its totient is φ = 1290775040.

The previous prime is 2057172763. The next prime is 2057172773. The reversal of 2057172771 is 1772717502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2057172771 - 2³ = 2057172763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2057172773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20168310 + ... + 20168411.

It is an arithmetic number, because the mean of its divisors is an integer number (363030498).

Almost surely, 2^2057172771 is an apocalyptic number.

2057172771 is a deficient number, since it is larger than the sum of its proper divisors (847071213).

2057172771 is a wasteful number, since it uses less digits than its factorization.

2057172771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40336741.

The product of its (nonzero) digits is 48020, while the sum is 39.

The square root of 2057172771 is about 45356.0665291866. The cubic root of 2057172771 is about 1271.8139641548.

The spelling of 2057172771 in words is "two billion, fifty-seven million, one hundred seventy-two thousand, seven hundred seventy-one".