2557944 has 24 divisors (see below), whose sum is σ = 6927960. Its totient is φ = 852624.

The previous prime is 2557937. The next prime is 2557957. The reversal of 2557944 is 4497552.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2557899 and 2557908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17692 + ... + 17835.

It is an arithmetic number, because the mean of its divisors is an integer number (288665).

2^2557944 is an apocalyptic number.

2557944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2557944 is an abundant number, since it is smaller than the sum of its proper divisors (4370016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2557944 is a wasteful number, since it uses less digits than its factorization.

2557944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35539 (or 35532 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 2557944 is about 1599.3573709462. The cubic root of 2557944 is about 136.7614439409.

The spelling of 2557944 in words is "two million, five hundred fifty-seven thousand, nine hundred forty-four".