4957321 has 2 divisors, whose sum is σ = 4957322. Its totient is φ = 4957320.

The previous prime is 4957307. The next prime is 4957327. The reversal of 4957321 is 1237594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4260096 + 697225 = 2064^2 + 835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4957321 is a prime.

It is not a weakly prime, because it can be changed into another prime (4957327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2478660 + 2478661.

It is an arithmetic number, because the mean of its divisors is an integer number (2478661).

Almost surely, 2^4957321 is an apocalyptic number.

It is an amenable number.

4957321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4957321 is an equidigital number, since it uses as much as digits as its factorization.

4957321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 4957321 is about 2226.5042106405. The cubic root of 4957321 is about 170.5096699910.

It can be divided in two parts, 49573 and 21, that added together give a palindrome (49594).

The spelling of 4957321 in words is "four million, nine hundred fifty-seven thousand, three hundred twenty-one".