4501123621 has 4 divisors (see below), whose sum is σ = 4696824672. Its totient is φ = 4305422572.

The previous prime is 4501123577. The next prime is 4501123639. The reversal of 4501123621 is 1263211054.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4501123621 - 2⁷ = 4501123493 is a prime.

It is a super-2 number, since 2×4501123621² = 40520227703048303282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4501123021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97850491 + ... + 97850536.

It is an arithmetic number, because the mean of its divisors is an integer number (1174206168).

Almost surely, 2^4501123621 is an apocalyptic number.

It is an amenable number.

4501123621 is a deficient number, since it is larger than the sum of its proper divisors (195701051).

4501123621 is a wasteful number, since it uses less digits than its factorization.

4501123621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195701050.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 4501123621 is about 67090.4137787210. The cubic root of 4501123621 is about 1651.1010246711.

Adding to 4501123621 its reverse (1263211054), we get a palindrome (5764334675).

The spelling of 4501123621 in words is "four billion, five hundred one million, one hundred twenty-three thousand, six hundred twenty-one".