4252621 has 4 divisors (see below), whose sum is σ = 4268700. Its totient is φ = 4236544.

The previous prime is 4252583. The next prime is 4252679. The reversal of 4252621 is 1262524.

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 212521 + 4040100 = 461^2 + 2010^2 .

It is a cyclic number.

It is not a de Polignac number, because 4252621 - 2⁹ = 4252109 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 4252592 and 4252601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4252681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7636 + ... + 8173.

It is an arithmetic number, because the mean of its divisors is an integer number (1067175).

Almost surely, 2^4252621 is an apocalyptic number.

It is an amenable number.

4252621 is a deficient number, since it is larger than the sum of its proper divisors (16079).

4252621 is a wasteful number, since it uses less digits than its factorization.

4252621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16078.

The product of its digits is 960, while the sum is 22.

The square root of 4252621 is about 2062.1884007045. The cubic root of 4252621 is about 162.0138813487.

The spelling of 4252621 in words is "four million, two hundred fifty-two thousand, six hundred twenty-one".