4730521 has 4 divisors (see below), whose sum is σ = 4738852. Its totient is φ = 4722192.

The previous prime is 4730483. The next prime is 4730533. The reversal of 4730521 is 1250374.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1250374 = 2 ⋅625187.

It can be written as a sum of positive squares in 2 ways, for example, as 774400 + 3956121 = 880^2 + 1989^2 .

It is a cyclic number.

It is not a de Polignac number, because 4730521 - 2⁹ = 4730009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4730492 and 4730501.

It is not an unprimeable number, because it can be changed into a prime (4730821) 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, 3246 + ... + 4471.

It is an arithmetic number, because the mean of its divisors is an integer number (1184713).

Almost surely, 2^4730521 is an apocalyptic number.

It is an amenable number.

4730521 is a deficient number, since it is larger than the sum of its proper divisors (8331).

4730521 is an equidigital number, since it uses as much as digits as its factorization.

4730521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8330.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 4730521 is about 2174.9760918226. The cubic root of 4730521 is about 167.8686733505.

Adding to 4730521 its reverse (1250374), we get a palindrome (5980895).

The spelling of 4730521 in words is "four million, seven hundred thirty thousand, five hundred twenty-one".