4788521 has 4 divisors (see below), whose sum is σ = 4805844. Its totient is φ = 4771200.

The previous prime is 4788517. The next prime is 4788533. The reversal of 4788521 is 1258874.

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 3857296 + 931225 = 1964^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 4788521 - 2² = 4788517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4788541) 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, 8240 + ... + 8801.

It is an arithmetic number, because the mean of its divisors is an integer number (1201461).

Almost surely, 2^4788521 is an apocalyptic number.

It is an amenable number.

4788521 is a deficient number, since it is larger than the sum of its proper divisors (17323).

4788521 is a wasteful number, since it uses less digits than its factorization.

4788521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17322.

The product of its digits is 17920, while the sum is 35.

The square root of 4788521 is about 2188.2689505634. The cubic root of 4788521 is about 168.5519567870.

The spelling of 4788521 in words is "four million, seven hundred eighty-eight thousand, five hundred twenty-one".