7271345 has 8 divisors (see below), whose sum is σ = 8743464. Its totient is φ = 5805184.

The previous prime is 7271321. The next prime is 7271387. The reversal of 7271345 is 5431727.

It can be written as a sum of positive squares in 4 ways, for example, as 179776 + 7091569 = 424^2 + 2663^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7271345 - 2¹⁸ = 7009201 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1907 + ... + 4263.

It is an arithmetic number, because the mean of its divisors is an integer number (1092933).

Almost surely, 2^7271345 is an apocalyptic number.

It is an amenable number.

7271345 is a deficient number, since it is larger than the sum of its proper divisors (1472119).

7271345 is a wasteful number, since it uses less digits than its factorization.

7271345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979.

The product of its digits is 5880, while the sum is 29.

The square root of 7271345 is about 2696.5431574518. The cubic root of 7271345 is about 193.7335858450.

It can be divided in two parts, 72 and 71345, that added together give a palindrome (71417).

The spelling of 7271345 in words is "seven million, two hundred seventy-one thousand, three hundred forty-five".