2557129 has 8 divisors (see below), whose sum is σ = 2677248. Its totient is φ = 2439840.

The previous prime is 2557127. The next prime is 2557169. The reversal of 2557129 is 9217552.

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 2557129 - 2¹ = 2557127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2557129.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557127) 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, 1264 + ... + 2590.

It is an arithmetic number, because the mean of its divisors is an integer number (334656).

2^2557129 is an apocalyptic number.

It is an amenable number.

2557129 is a deficient number, since it is larger than the sum of its proper divisors (120119).

2557129 is a wasteful number, since it uses less digits than its factorization.

2557129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415.

The product of its digits is 6300, while the sum is 31.

The square root of 2557129 is about 1599.1025608134. The cubic root of 2557129 is about 136.7469176369.

It can be divided in two parts, 25571 and 29, that added together give a square (25600 = 160²).

The spelling of 2557129 in words is "two million, five hundred fifty-seven thousand, one hundred twenty-nine".