4515121 has 4 divisors (see below), whose sum is σ = 4862452. Its totient is φ = 4167792.

The previous prime is 4515113. The next prime is 4515139. The reversal of 4515121 is 1215154.

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 1587600 + 2927521 = 1260^2 + 1711^2 .

It is a cyclic number.

It is not a de Polignac number, because 4515121 - 2³ = 4515113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4515101) 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, 173646 + ... + 173671.

It is an arithmetic number, because the mean of its divisors is an integer number (1215613).

Almost surely, 2^4515121 is an apocalyptic number.

It is an amenable number.

4515121 is a deficient number, since it is larger than the sum of its proper divisors (347331).

4515121 is a wasteful number, since it uses less digits than its factorization.

4515121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347330.

The product of its digits is 200, while the sum is 19.

The square root of 4515121 is about 2124.8814084555. The cubic root of 4515121 is about 165.2810758616.

The spelling of 4515121 in words is "four million, five hundred fifteen thousand, one hundred twenty-one".