2057172373 has 4 divisors (see below), whose sum is σ = 2057281740. Its totient is φ = 2057063008.

The previous prime is 2057172323. The next prime is 2057172379. The reversal of 2057172373 is 3732717502.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1344175569 + 712996804 = 36663^2 + 26702^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2057172373 is a prime.

It is a super-2 number, since 2×2057172373² = 8463916344468902258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057172379) 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, 18478 + ... + 66751.

It is an arithmetic number, because the mean of its divisors is an integer number (514320435).

Almost surely, 2^2057172373 is an apocalyptic number.

It is an amenable number.

2057172373 is a deficient number, since it is larger than the sum of its proper divisors (109367).

2057172373 is an equidigital number, since it uses as much as digits as its factorization.

2057172373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109366.

The product of its (nonzero) digits is 61740, while the sum is 37.

The square root of 2057172373 is about 45356.0621416807. The cubic root of 2057172373 is about 1271.8138821358.

Adding to 2057172373 its reverse (3732717502), we get a palindrome (5789889875).

It can be divided in two parts, 205 and 7172373, that added together give a triangular number (7172578 = T₃₇₈₇).

The spelling of 2057172373 in words is "two billion, fifty-seven million, one hundred seventy-two thousand, three hundred seventy-three".