157944559 has 2 divisors, whose sum is σ = 157944560. Its totient is φ = 157944558.

The previous prime is 157944551. The next prime is 157944571. The reversal of 157944559 is 955449751.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157944559 - 2³ = 157944551 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 (157944551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78972279 + 78972280.

It is an arithmetic number, because the mean of its divisors is an integer number (78972280).

Almost surely, 2^157944559 is an apocalyptic number.

157944559 is a deficient number, since it is larger than the sum of its proper divisors (1).

157944559 is an equidigital number, since it uses as much as digits as its factorization.

157944559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134000, while the sum is 49.

The square root of 157944559 is about 12567.5995719151. The cubic root of 157944559 is about 540.5487779607.

The spelling of 157944559 in words is "one hundred fifty-seven million, nine hundred forty-four thousand, five hundred fifty-nine".