52900051781 has 2 divisors, whose sum is σ = 52900051782. Its totient is φ = 52900051780.

The previous prime is 52900051751. The next prime is 52900051843. The reversal of 52900051781 is 18715000925.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37208481025 + 15691570756 = 192895^2 + 125266^2 .

It is a cyclic number.

It is not a de Polignac number, because 52900051781 - 2⁶ = 52900051717 is a prime.

It is a super-2 number, since 2×52900051781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52900051751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26450025890 + 26450025891.

It is an arithmetic number, because the mean of its divisors is an integer number (26450025891).

Almost surely, 2^52900051781 is an apocalyptic number.

It is an amenable number.

52900051781 is a deficient number, since it is larger than the sum of its proper divisors (1).

52900051781 is an equidigital number, since it uses as much as digits as its factorization.

52900051781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 38.

The spelling of 52900051781 in words is "fifty-two billion, nine hundred million, fifty-one thousand, seven hundred eighty-one".