52157789 has 2 divisors, whose sum is σ = 52157790. Its totient is φ = 52157788.

The previous prime is 52157771. The next prime is 52157797. The reversal of 52157789 is 98775125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28440889 + 23716900 = 5333^2 + 4870^2 .

It is a cyclic number.

It is not a de Polignac number, because 52157789 - 2⁸ = 52157533 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52157719) 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, 26078894 + 26078895.

It is an arithmetic number, because the mean of its divisors is an integer number (26078895).

Almost surely, 2^52157789 is an apocalyptic number.

It is an amenable number.

52157789 is a deficient number, since it is larger than the sum of its proper divisors (1).

52157789 is an equidigital number, since it uses as much as digits as its factorization.

52157789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176400, while the sum is 44.

The square root of 52157789 is about 7222.0349625296. The cubic root of 52157789 is about 373.6282660034.

It can be divided in two parts, 52 and 157789, that multiplied together give a palindrome (8205028).

The spelling of 52157789 in words is "fifty-two million, one hundred fifty-seven thousand, seven hundred eighty-nine".