7521313 has 8 divisors (see below), whose sum is σ = 7798016. Its totient is φ = 7246800.

The previous prime is 7521307. The next prime is 7521317. The reversal of 7521313 is 3131257.

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 7521313 - 2⁵ = 7521281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7521317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9895 + ... + 10627.

It is an arithmetic number, because the mean of its divisors is an integer number (974752).

Almost surely, 2^7521313 is an apocalyptic number.

It is an amenable number.

7521313 is a deficient number, since it is larger than the sum of its proper divisors (276703).

7521313 is a wasteful number, since it uses less digits than its factorization.

7521313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095.

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

The square root of 7521313 is about 2742.5012306287. The cubic root of 7521313 is about 195.9286235313.

The spelling of 7521313 in words is "seven million, five hundred twenty-one thousand, three hundred thirteen".