2528126261 has 2 divisors, whose sum is σ = 2528126262. Its totient is φ = 2528126260.

The previous prime is 2528126231. The next prime is 2528126267. The reversal of 2528126261 is 1626218252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2523153361 + 4972900 = 50231^2 + 2230^2 .

It is a cyclic number.

It is not a de Polignac number, because 2528126261 - 2⁶ = 2528126197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2528126267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1264063130 + 1264063131.

It is an arithmetic number, because the mean of its divisors is an integer number (1264063131).

Almost surely, 2^2528126261 is an apocalyptic number.

It is an amenable number.

2528126261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2528126261 is an equidigital number, since it uses as much as digits as its factorization.

2528126261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 35.

The square root of 2528126261 is about 50280.4759424570. The cubic root of 2528126261 is about 1362.2796004748.

The spelling of 2528126261 in words is "two billion, five hundred twenty-eight million, one hundred twenty-six thousand, two hundred sixty-one".