7314521 has 4 divisors (see below), whose sum is σ = 7387044. Its totient is φ = 7242000.

The previous prime is 7314511. The next prime is 7314533. The reversal of 7314521 is 1254137.

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 6071296 + 1243225 = 2464^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 7314521 - 2¹⁸ = 7052377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7314511) 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, 36110 + ... + 36311.

It is an arithmetic number, because the mean of its divisors is an integer number (1846761).

Almost surely, 2^7314521 is an apocalyptic number.

It is an amenable number.

7314521 is a deficient number, since it is larger than the sum of its proper divisors (72523).

7314521 is a wasteful number, since it uses less digits than its factorization.

7314521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72522.

The product of its digits is 840, while the sum is 23.

The square root of 7314521 is about 2704.5371138145. The cubic root of 7314521 is about 194.1162816537.

Adding to 7314521 its reverse (1254137), we get a palindrome (8568658).

The spelling of 7314521 in words is "seven million, three hundred fourteen thousand, five hundred twenty-one".