7134521 has 4 divisors (see below), whose sum is σ = 7148112. Its totient is φ = 7120932.

The previous prime is 7134511. The next prime is 7134527. The reversal of 7134521 is 1254317.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7134521 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 (7134527) 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, 5975 + ... + 7068.

It is an arithmetic number, because the mean of its divisors is an integer number (1787028).

Almost surely, 2^7134521 is an apocalyptic number.

It is an amenable number.

7134521 is a deficient number, since it is larger than the sum of its proper divisors (13591).

7134521 is a wasteful number, since it uses less digits than its factorization.

7134521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13590.

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

The square root of 7134521 is about 2671.0524143116. The cubic root of 7134521 is about 192.5107297106.

Adding to 7134521 its reverse (1254317), we get a palindrome (8388838).

The spelling of 7134521 in words is "seven million, one hundred thirty-four thousand, five hundred twenty-one".