52856729437 has 2 divisors, whose sum is σ = 52856729438. Its totient is φ = 52856729436.

The previous prime is 52856729381. The next prime is 52856729473. The reversal of 52856729437 is 73492765825.

It is a happy number.

Together with next prime (52856729473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36951988441 + 15904740996 = 192229^2 + 126114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52856729437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52856720437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26428364718 + 26428364719.

It is an arithmetic number, because the mean of its divisors is an integer number (26428364719).

Almost surely, 2^52856729437 is an apocalyptic number.

It is an amenable number.

52856729437 is a deficient number, since it is larger than the sum of its proper divisors (1).

52856729437 is an equidigital number, since it uses as much as digits as its factorization.

52856729437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25401600, while the sum is 58.

The spelling of 52856729437 in words is "fifty-two billion, eight hundred fifty-six million, seven hundred twenty-nine thousand, four hundred thirty-seven".