7155313 has 4 divisors (see below), whose sum is σ = 7805808. Its totient is φ = 6504820.

The previous prime is 7155293. The next prime is 7155331. The reversal of 7155313 is 3135517.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7155313 - 2¹³ = 7147121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7155383) 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 in 3 ways as a sum of consecutive naturals, for example, 325231 + ... + 325252.

It is an arithmetic number, because the mean of its divisors is an integer number (1951452).

Almost surely, 2^7155313 is an apocalyptic number.

It is an amenable number.

7155313 is a deficient number, since it is larger than the sum of its proper divisors (650495).

7155313 is a wasteful number, since it uses less digits than its factorization.

7155313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650494.

The product of its digits is 1575, while the sum is 25.

The square root of 7155313 is about 2674.9416816073. The cubic root of 7155313 is about 192.6975584671.

The spelling of 7155313 in words is "seven million, one hundred fifty-five thousand, three hundred thirteen".