4145451321 has 16 divisors (see below), whose sum is σ = 6031235520. Its totient is φ = 2511774720.

The previous prime is 4145451287. The next prime is 4145451361. The reversal of 4145451321 is 1231545414.

It is not a de Polignac number, because 4145451321 - 2⁶ = 4145451257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4145451361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145065 + ... + 171273.

It is an arithmetic number, because the mean of its divisors is an integer number (376952220).

Almost surely, 2^4145451321 is an apocalyptic number.

It is an amenable number.

4145451321 is a deficient number, since it is larger than the sum of its proper divisors (1885784199).

4145451321 is a wasteful number, since it uses less digits than its factorization.

4145451321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31016.

The product of its digits is 9600, while the sum is 30.

The square root of 4145451321 is about 64385.1793582964. The cubic root of 4145451321 is about 1606.4132337635.

Adding to 4145451321 its reverse (1231545414), we get a palindrome (5376996735).

The spelling of 4145451321 in words is "four billion, one hundred forty-five million, four hundred fifty-one thousand, three hundred twenty-one".