52507501261 has 2 divisors, whose sum is σ = 52507501262. Its totient is φ = 52507501260.

The previous prime is 52507501217. The next prime is 52507501271. The reversal of 52507501261 is 16210570525.

52507501261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52445580100 + 61921161 = 229010^2 + 7869^2 .

It is a cyclic number.

It is not a de Polignac number, because 52507501261 - 2¹⁷ = 52507370189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52507501271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26253750630 + 26253750631.

It is an arithmetic number, because the mean of its divisors is an integer number (26253750631).

Almost surely, 2^52507501261 is an apocalyptic number.

It is an amenable number.

52507501261 is a deficient number, since it is larger than the sum of its proper divisors (1).

52507501261 is an equidigital number, since it uses as much as digits as its factorization.

52507501261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 34.

The spelling of 52507501261 in words is "fifty-two billion, five hundred seven million, five hundred one thousand, two hundred sixty-one".