4524053621 has 4 divisors (see below), whose sum is σ = 4680055500. Its totient is φ = 4368051744.

The previous prime is 4524053591. The next prime is 4524053623. The reversal of 4524053621 is 1263504254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1263504254 = 2 ⋅631752127.

It can be written as a sum of positive squares in 2 ways, for example, as 1063672996 + 3460380625 = 32614^2 + 58825^2 .

It is a cyclic number.

It is not a de Polignac number, because 4524053621 - 2⁶ = 4524053557 is a prime.

It is a super-2 number, since 2×4524053621² = 40934122331366423282, 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 (4524053623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78000896 + ... + 78000953.

It is an arithmetic number, because the mean of its divisors is an integer number (1170013875).

Almost surely, 2^4524053621 is an apocalyptic number.

It is an amenable number.

4524053621 is a deficient number, since it is larger than the sum of its proper divisors (156001879).

4524053621 is a wasteful number, since it uses less digits than its factorization.

4524053621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156001878.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 4524053621 is about 67261.0854878213. The cubic root of 4524053621 is about 1653.9000027030.

Adding to 4524053621 its reverse (1263504254), we get a palindrome (5787557875).

The spelling of 4524053621 in words is "four billion, five hundred twenty-four million, fifty-three thousand, six hundred twenty-one".