2557379173 has 8 divisors (see below), whose sum is σ = 2708323992. Its totient is φ = 2406491136.

The previous prime is 2557379171. The next prime is 2557379179. The reversal of 2557379173 is 3719737552.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2383587684 + 173791489 = 48822^2 + 13183^2 .

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 2557379173 - 2¹ = 2557379171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557379171) 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, 109311 + ... + 130627.

It is an arithmetic number, because the mean of its divisors is an integer number (338540499).

Almost surely, 2^2557379173 is an apocalyptic number.

It is an amenable number.

2557379173 is a deficient number, since it is larger than the sum of its proper divisors (150944819).

2557379173 is a wasteful number, since it uses less digits than its factorization.

2557379173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28391.

The product of its digits is 1389150, while the sum is 49.

The square root of 2557379173 is about 50570.5366097691. The cubic root of 2557379173 is about 1367.5137697012.

It can be divided in two parts, 2557379 and 173, that added together give a palindrome (2557552).

The spelling of 2557379173 in words is "two billion, five hundred fifty-seven million, three hundred seventy-nine thousand, one hundred seventy-three".