4713521 has 4 divisors (see below), whose sum is σ = 4762212. Its totient is φ = 4664832.

The previous prime is 4713493. The next prime is 4713547. The reversal of 4713521 is 1253174.

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 2496400 + 2217121 = 1580^2 + 1489^2 .

It is a cyclic number.

It is not a de Polignac number, because 4713521 - 2²² = 519217 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 (4713721) 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, 24200 + ... + 24393.

It is an arithmetic number, because the mean of its divisors is an integer number (1190553).

Almost surely, 2^4713521 is an apocalyptic number.

It is an amenable number.

4713521 is a deficient number, since it is larger than the sum of its proper divisors (48691).

4713521 is an equidigital number, since it uses as much as digits as its factorization.

4713521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48690.

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

The square root of 4713521 is about 2171.0644854541. The cubic root of 4713521 is about 167.6673429684.

Adding to 4713521 its reverse (1253174), we get a palindrome (5966695).

The spelling of 4713521 in words is "four million, seven hundred thirteen thousand, five hundred twenty-one".