4535780521 has 2 divisors, whose sum is σ = 4535780522. Its totient is φ = 4535780520.

The previous prime is 4535780507. The next prime is 4535780609. The reversal of 4535780521 is 1250875354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3165300121 + 1370480400 = 56261^2 + 37020^2 .

It is a cyclic number.

It is not a de Polignac number, because 4535780521 - 2²⁵ = 4502226089 is a prime.

It is not a weakly prime, because it can be changed into another prime (4535781521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2267890260 + 2267890261.

It is an arithmetic number, because the mean of its divisors is an integer number (2267890261).

Almost surely, 2^4535780521 is an apocalyptic number.

It is an amenable number.

4535780521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4535780521 is an equidigital number, since it uses as much as digits as its factorization.

4535780521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 4535780521 is about 67348.2035469395. The cubic root of 4535780521 is about 1655.3278067244.

The spelling of 4535780521 in words is "four billion, five hundred thirty-five million, seven hundred eighty thousand, five hundred twenty-one".