2144557 has 8 divisors (see below), whose sum is σ = 2223000. Its totient is φ = 2067264.

The previous prime is 2144551. The next prime is 2144609. The reversal of 2144557 is 7554412.

It can be written as a sum of positive squares in 4 ways, for example, as 145161 + 1999396 = 381^2 + 1414^2 .

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

It is not a de Polignac number, because 2144557 - 2¹⁵ = 2111789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144551) 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, 5319 + ... + 5707.

It is an arithmetic number, because the mean of its divisors is an integer number (277875).

2^2144557 is an apocalyptic number.

It is an amenable number.

2144557 is a deficient number, since it is larger than the sum of its proper divisors (78443).

2144557 is a wasteful number, since it uses less digits than its factorization.

2144557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575.

The product of its digits is 5600, while the sum is 28.

The square root of 2144557 is about 1464.4306060719. The cubic root of 2144557 is about 128.9572800875.

Adding to 2144557 its reverse (7554412), we get a palindrome (9698969).

It can be divided in two parts, 2144 and 557, that added together give a triangular number (2701 = T₇₃).

The spelling of 2144557 in words is "two million, one hundred forty-four thousand, five hundred fifty-seven".