4421513 has 4 divisors (see below), whose sum is σ = 4681620. Its totient is φ = 4161408.

The previous prime is 4421507. The next prime is 4421533. The reversal of 4421513 is 3151244.

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 3948169 + 473344 = 1987^2 + 688^2 .

It is a cyclic number.

It is not a de Polignac number, because 4421513 - 2⁶ = 4421449 is a prime.

It is a super-3 number, since 3×4421513³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4421533) 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, 130028 + ... + 130061.

It is an arithmetic number, because the mean of its divisors is an integer number (1170405).

Almost surely, 2^4421513 is an apocalyptic number.

It is an amenable number.

4421513 is a deficient number, since it is larger than the sum of its proper divisors (260107).

4421513 is a wasteful number, since it uses less digits than its factorization.

4421513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260106.

The product of its digits is 480, while the sum is 20.

The square root of 4421513 is about 2102.7394037303. The cubic root of 4421513 is about 164.1308815414.

Adding to 4421513 its reverse (3151244), we get a palindrome (7572757).

It can be divided in two parts, 442 and 1513, that multiplied together give a triangular number (668746 = T₁₁₅₆).

The spelling of 4421513 in words is "four million, four hundred twenty-one thousand, five hundred thirteen".