7251313 has 2 divisors, whose sum is σ = 7251314. Its totient is φ = 7251312.

The previous prime is 7251311. The next prime is 7251317. The reversal of 7251313 is 3131527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4129024 + 3122289 = 2032^2 + 1767^2 .

It is a cyclic number.

It is not a de Polignac number, because 7251313 - 2¹ = 7251311 is a prime.

Together with 7251311, it forms a pair of twin primes.

7251313 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7251311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3625656 + 3625657.

It is an arithmetic number, because the mean of its divisors is an integer number (3625657).

Almost surely, 2^7251313 is an apocalyptic number.

It is an amenable number.

7251313 is a deficient number, since it is larger than the sum of its proper divisors (1).

7251313 is an equidigital number, since it uses as much as digits as its factorization.

7251313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 630, while the sum is 22.

The square root of 7251313 is about 2692.8262105082. The cubic root of 7251313 is about 193.5555151446. Note that the first 4 decimals are identical.

The spelling of 7251313 in words is "seven million, two hundred fifty-one thousand, three hundred thirteen".