4543401321 has 16 divisors (see below), whose sum is σ = 6744366720. Its totient is φ = 3022903440.

The previous prime is 4543401307. The next prime is 4543401337. The reversal of 4543401321 is 1231043454.

It is a happy number.

It is not a de Polignac number, because 4543401321 - 2⁷ = 4543401193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4543401341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153690 + ... + 180851.

It is an arithmetic number, because the mean of its divisors is an integer number (421522920).

Almost surely, 2^4543401321 is an apocalyptic number.

It is an amenable number.

4543401321 is a deficient number, since it is larger than the sum of its proper divisors (2200965399).

4543401321 is a wasteful number, since it uses less digits than its factorization.

4543401321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335053 (or 335047 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 4543401321 is about 67404.7574062840. The cubic root of 4543401321 is about 1656.2543553587.

Adding to 4543401321 its reverse (1231043454), we get a palindrome (5774444775).

The spelling of 4543401321 in words is "four billion, five hundred forty-three million, four hundred one thousand, three hundred twenty-one".