7321315 has 4 divisors (see below), whose sum is σ = 8785584. Its totient is φ = 5857048.

The previous prime is 7321277. The next prime is 7321319. The reversal of 7321315 is 5131237.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7321315 - 2¹³ = 7313123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7321319) 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, 732127 + ... + 732136.

It is an arithmetic number, because the mean of its divisors is an integer number (2196396).

Almost surely, 2^7321315 is an apocalyptic number.

7321315 is a deficient number, since it is larger than the sum of its proper divisors (1464269).

7321315 is a wasteful number, since it uses less digits than its factorization.

7321315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464268.

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

The square root of 7321315 is about 2705.7928597733. The cubic root of 7321315 is about 194.1763638702.

The spelling of 7321315 in words is "seven million, three hundred twenty-one thousand, three hundred fifteen".