2143545 has 8 divisors (see below), whose sum is σ = 3429696. Its totient is φ = 1143216.

The previous prime is 2143543. The next prime is 2143567. The reversal of 2143545 is 5453412.

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

It is not a de Polignac number, because 2143545 - 2¹ = 2143543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2143541) 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, 71437 + ... + 71466.

It is an arithmetic number, because the mean of its divisors is an integer number (428712).

2^2143545 is an apocalyptic number.

It is an amenable number.

2143545 is a deficient number, since it is larger than the sum of its proper divisors (1286151).

2143545 is a wasteful number, since it uses less digits than its factorization.

2143545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142911.

The product of its digits is 2400, while the sum is 24.

The square root of 2143545 is about 1464.0850385138. The cubic root of 2143545 is about 128.9369922454.

Adding to 2143545 its reverse (5453412), we get a palindrome (7596957).

The spelling of 2143545 in words is "two million, one hundred forty-three thousand, five hundred forty-five".