4555321 has 2 divisors, whose sum is σ = 4555322. Its totient is φ = 4555320.

The previous prime is 4555319. The next prime is 4555339. The reversal of 4555321 is 1235554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2595321 + 1960000 = 1611^2 + 1400^2 .

It is a cyclic number.

It is not a de Polignac number, because 4555321 - 2¹ = 4555319 is a prime.

Together with 4555319, it forms a pair of twin primes.

4555321 is a lucky number.

It is equal to p₃₁₉₅₃₄ and since 4555321 and 319534 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (4555301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2277660 + 2277661.

It is an arithmetic number, because the mean of its divisors is an integer number (2277661).

Almost surely, 2^4555321 is an apocalyptic number.

It is an amenable number.

4555321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4555321 is an equidigital number, since it uses as much as digits as its factorization.

4555321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3000, while the sum is 25.

The square root of 4555321 is about 2134.3197979684. The cubic root of 4555321 is about 165.7701492976.

It can be divided in two parts, 455 and 5321, that added together give a square (5776 = 76²).

The spelling of 4555321 in words is "four million, five hundred fifty-five thousand, three hundred twenty-one".