157889 has 2 divisors, whose sum is σ = 157890. Its totient is φ = 157888.

The previous prime is 157877. The next prime is 157897. The reversal of 157889 is 988751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153664 + 4225 = 392^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 157889 - 2¹⁶ = 92353 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (157189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78944 + 78945.

It is an arithmetic number, because the mean of its divisors is an integer number (78945).

2¹⁵⁷⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

157889 is a deficient number, since it is larger than the sum of its proper divisors (1).

157889 is an equidigital number, since it uses as much as digits as its factorization.

157889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 38.

The square root of 157889 is about 397.3524883526. The cubic root of 157889 is about 54.0485388900.

The spelling of 157889 in words is "one hundred fifty-seven thousand, eight hundred eighty-nine".