157111543 has 2 divisors, whose sum is σ = 157111544. Its totient is φ = 157111542.

The previous prime is 157111541. The next prime is 157111607. The reversal of 157111543 is 345111751.

It is a weak prime.

It is an emirp because it is prime and its reverse (345111751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157111543 - 2¹ = 157111541 is a prime.

Together with 157111541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157111541) 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, 78555771 + 78555772.

It is an arithmetic number, because the mean of its divisors is an integer number (78555772).

Almost surely, 2^157111543 is an apocalyptic number.

157111543 is a deficient number, since it is larger than the sum of its proper divisors (1).

157111543 is an equidigital number, since it uses as much as digits as its factorization.

157111543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2100, while the sum is 28.

The square root of 157111543 is about 12534.4143461113. The cubic root of 157111543 is about 539.5967989259.

The spelling of 157111543 in words is "one hundred fifty-seven million, one hundred eleven thousand, five hundred forty-three".