2144541 has 8 divisors (see below), whose sum is σ = 3267904. Its totient is φ = 1225440.

The previous prime is 2144537. The next prime is 2144551. The reversal of 2144541 is 1454412.

It is a happy number.

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

It is not a de Polignac number, because 2144541 - 2² = 2144537 is a prime.

It is a super-2 number, since 2×2144541² = 9198112201362, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 102121 = 2144541 / (2 + 1 + 4 + 4 + 5 + 4 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144501) 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, 51040 + ... + 51081.

It is an arithmetic number, because the mean of its divisors is an integer number (408488).

2^2144541 is an apocalyptic number.

2144541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2144541 is a deficient number, since it is larger than the sum of its proper divisors (1123363).

2144541 is a wasteful number, since it uses less digits than its factorization.

2144541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102131.

The product of its digits is 640, while the sum is 21.

The square root of 2144541 is about 1464.4251431876. The cubic root of 2144541 is about 128.9569593807.

Adding to 2144541 its reverse (1454412), we get a palindrome (3598953).

The spelling of 2144541 in words is "two million, one hundred forty-four thousand, five hundred forty-one".