7364521 has 4 divisors (see below), whose sum is σ = 7618500. Its totient is φ = 7110544.

The previous prime is 7364491. The next prime is 7364527. The reversal of 7364521 is 1254637.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2143296 + 5221225 = 1464^2 + 2285^2 .

It is a cyclic number.

It is not a de Polignac number, because 7364521 - 2¹¹ = 7362473 is a prime.

It is a Duffinian number.

7364521 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7364521.

It is not an unprimeable number, because it can be changed into a prime (7364527) 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, 126946 + ... + 127003.

It is an arithmetic number, because the mean of its divisors is an integer number (1904625).

Almost surely, 2^7364521 is an apocalyptic number.

It is an amenable number.

7364521 is a deficient number, since it is larger than the sum of its proper divisors (253979).

7364521 is a wasteful number, since it uses less digits than its factorization.

7364521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253978.

The product of its digits is 5040, while the sum is 28.

The square root of 7364521 is about 2713.7650966876. The cubic root of 7364521 is about 194.5575856610.

The spelling of 7364521 in words is "seven million, three hundred sixty-four thousand, five hundred twenty-one".