7141521 has 8 divisors (see below), whose sum is σ = 9642880. Its totient is φ = 4700592.

The previous prime is 7141489. The next prime is 7141531. The reversal of 7141521 is 1251417.

It is a happy number.

7141521 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7141521 - 2⁵ = 7141489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7141531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14830 + ... + 15303.

It is an arithmetic number, because the mean of its divisors is an integer number (1205360).

Almost surely, 2^7141521 is an apocalyptic number.

It is an amenable number.

7141521 is a deficient number, since it is larger than the sum of its proper divisors (2501359).

7141521 is a wasteful number, since it uses less digits than its factorization.

7141521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30215.

The product of its digits is 280, while the sum is 21.

The square root of 7141521 is about 2672.3624379938. The cubic root of 7141521 is about 192.5736694476.

Adding to 7141521 its reverse (1251417), we get a palindrome (8392938).

The spelling of 7141521 in words is "seven million, one hundred forty-one thousand, five hundred twenty-one".