7368521 has 4 divisors (see below), whose sum is σ = 7373952. Its totient is φ = 7363092.

The previous prime is 7368511. The next prime is 7368527. The reversal of 7368521 is 1258637.

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 a de Polignac number, because none of the positive numbers 2^k-7368521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7368527) 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, 1280 + ... + 4046.

It is an arithmetic number, because the mean of its divisors is an integer number (1843488).

Almost surely, 2^7368521 is an apocalyptic number.

It is an amenable number.

7368521 is a deficient number, since it is larger than the sum of its proper divisors (5431).

7368521 is a wasteful number, since it uses less digits than its factorization.

7368521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5430.

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

The square root of 7368521 is about 2714.5019801061. The cubic root of 7368521 is about 194.5928035880.

The spelling of 7368521 in words is "seven million, three hundred sixty-eight thousand, five hundred twenty-one".