4055312321 has 4 divisors (see below), whose sum is σ = 4231630272. Its totient is φ = 3878994372.

The previous prime is 4055312309. The next prime is 4055312347. The reversal of 4055312321 is 1232135504.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4055312321 - 2⁶ = 4055312257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4055312381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88158941 + ... + 88158986.

It is an arithmetic number, because the mean of its divisors is an integer number (1057907568).

Almost surely, 2^4055312321 is an apocalyptic number.

It is an amenable number.

4055312321 is a deficient number, since it is larger than the sum of its proper divisors (176317951).

4055312321 is a wasteful number, since it uses less digits than its factorization.

4055312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176317950.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 4055312321 is about 63681.3341647299. The cubic root of 4055312321 is about 1594.6844855020.

Adding to 4055312321 its reverse (1232135504), we get a palindrome (5287447825).

The spelling of 4055312321 in words is "four billion, fifty-five million, three hundred twelve thousand, three hundred twenty-one".