7386521 has 4 divisors (see below), whose sum is σ = 7392000. Its totient is φ = 7381044.

The previous prime is 7386493. The next prime is 7386523. The reversal of 7386521 is 1256837.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7386521 - 2¹⁴ = 7370137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7386523) 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, 860 + ... + 3938.

It is an arithmetic number, because the mean of its divisors is an integer number (1848000).

Almost surely, 2^7386521 is an apocalyptic number.

It is an amenable number.

7386521 is a deficient number, since it is larger than the sum of its proper divisors (5479).

7386521 is a wasteful number, since it uses less digits than its factorization.

7386521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5478.

The product of its digits is 10080, while the sum is 32.

The square root of 7386521 is about 2717.8154830672. The cubic root of 7386521 is about 194.7511267301.

The spelling of 7386521 in words is "seven million, three hundred eighty-six thousand, five hundred twenty-one".