52551121439 has 2 divisors, whose sum is σ = 52551121440. Its totient is φ = 52551121438.

The previous prime is 52551121421. The next prime is 52551121517. The reversal of 52551121439 is 93412115525.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52551121439 - 2¹⁶ = 52551055903 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52551121409) 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, 26275560719 + 26275560720.

It is an arithmetic number, because the mean of its divisors is an integer number (26275560720).

Almost surely, 2^52551121439 is an apocalyptic number.

52551121439 is a deficient number, since it is larger than the sum of its proper divisors (1).

52551121439 is an equidigital number, since it uses as much as digits as its factorization.

52551121439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 38.

The spelling of 52551121439 in words is "fifty-two billion, five hundred fifty-one million, one hundred twenty-one thousand, four hundred thirty-nine".