2563506061 has 2 divisors, whose sum is σ = 2563506062. Its totient is φ = 2563506060.

The previous prime is 2563506059. The next prime is 2563506083. The reversal of 2563506061 is 1606053652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1460004100 + 1103501961 = 38210^2 + 33219^2 .

It is a cyclic number.

It is not a de Polignac number, because 2563506061 - 2¹ = 2563506059 is a prime.

Together with 2563506059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2563506461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281753030 + 1281753031.

It is an arithmetic number, because the mean of its divisors is an integer number (1281753031).

Almost surely, 2^2563506061 is an apocalyptic number.

It is an amenable number.

2563506061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2563506061 is an equidigital number, since it uses as much as digits as its factorization.

2563506061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 2563506061 is about 50631.0780153850. The cubic root of 2563506061 is about 1368.6049807896.

The spelling of 2563506061 in words is "two billion, five hundred sixty-three million, five hundred six thousand, sixty-one".