7385521 has 8 divisors (see below), whose sum is σ = 8676864. Its totient is φ = 6197520.

The previous prime is 7385519. The next prime is 7385527. The reversal of 7385521 is 1255837.

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 7385521 - 2¹ = 7385519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7385527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25681 + ... + 25966.

It is an arithmetic number, because the mean of its divisors is an integer number (1084608).

Almost surely, 2^7385521 is an apocalyptic number.

It is an amenable number.

7385521 is a deficient number, since it is larger than the sum of its proper divisors (1291343).

7385521 is a wasteful number, since it uses less digits than its factorization.

7385521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51671.

The product of its digits is 8400, while the sum is 31.

The square root of 7385521 is about 2717.6315055577. The cubic root of 7385521 is about 194.7423377519.

The spelling of 7385521 in words is "seven million, three hundred eighty-five thousand, five hundred twenty-one".