4352772521 has 2 divisors, whose sum is σ = 4352772522. Its totient is φ = 4352772520.

The previous prime is 4352772493. The next prime is 4352772559. The reversal of 4352772521 is 1252772534.

It is an a-pointer prime, because the next prime (4352772559) can be obtained adding 4352772521 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2966327296 + 1386445225 = 54464^2 + 37235^2 .

It is a cyclic number.

It is not a de Polignac number, because 4352772521 - 2¹⁰ = 4352771497 is a prime.

It is not a weakly prime, because it can be changed into another prime (4352772581) 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 as a sum of consecutive naturals, namely, 2176386260 + 2176386261.

It is an arithmetic number, because the mean of its divisors is an integer number (2176386261).

Almost surely, 2^4352772521 is an apocalyptic number.

It is an amenable number.

4352772521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4352772521 is an equidigital number, since it uses as much as digits as its factorization.

4352772521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 38.

The square root of 4352772521 is about 65975.5448708080. The cubic root of 4352772521 is about 1632.7586393493.

The spelling of 4352772521 in words is "four billion, three hundred fifty-two million, seven hundred seventy-two thousand, five hundred twenty-one".