2520545789 has 2 divisors, whose sum is σ = 2520545790. Its totient is φ = 2520545788.

The previous prime is 2520545777. The next prime is 2520545801. The reversal of 2520545789 is 9875450252.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2520545777) and next prime (2520545801).

It can be written as a sum of positive squares in only one way, i.e., 1908379225 + 612166564 = 43685^2 + 24742^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2520545789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2520545189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260272894 + 1260272895.

It is an arithmetic number, because the mean of its divisors is an integer number (1260272895).

Almost surely, 2^2520545789 is an apocalyptic number.

It is an amenable number.

2520545789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520545789 is an equidigital number, since it uses as much as digits as its factorization.

2520545789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008000, while the sum is 47.

The square root of 2520545789 is about 50205.0374862921. The cubic root of 2520545789 is about 1360.9166594490.

The spelling of 2520545789 in words is "two billion, five hundred twenty million, five hundred forty-five thousand, seven hundred eighty-nine".