157243589 has 2 divisors, whose sum is σ = 157243590. Its totient is φ = 157243588.

The previous prime is 157243579. The next prime is 157243607. The reversal of 157243589 is 985342751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80102500 + 77141089 = 8950^2 + 8783^2 .

It is an emirp because it is prime and its reverse (985342751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157243589 - 2¹² = 157239493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157243519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78621794 + 78621795.

It is an arithmetic number, because the mean of its divisors is an integer number (78621795).

Almost surely, 2^157243589 is an apocalyptic number.

It is an amenable number.

157243589 is a deficient number, since it is larger than the sum of its proper divisors (1).

157243589 is an equidigital number, since it uses as much as digits as its factorization.

157243589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 44.

The square root of 157243589 is about 12539.6805780690. The cubic root of 157243589 is about 539.7479264740.

The spelling of 157243589 in words is "one hundred fifty-seven million, two hundred forty-three thousand, five hundred eighty-nine".