52072406261 has 2 divisors, whose sum is σ = 52072406262. Its totient is φ = 52072406260.

The previous prime is 52072406201. The next prime is 52072406357. The reversal of 52072406261 is 16260427025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49046746225 + 3025660036 = 221465^2 + 55006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52072406261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52072406201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26036203130 + 26036203131.

It is an arithmetic number, because the mean of its divisors is an integer number (26036203131).

Almost surely, 2^52072406261 is an apocalyptic number.

It is an amenable number.

52072406261 is a deficient number, since it is larger than the sum of its proper divisors (1).

52072406261 is an equidigital number, since it uses as much as digits as its factorization.

52072406261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 52072406261 in words is "fifty-two billion, seventy-two million, four hundred six thousand, two hundred sixty-one".