157197043 has 2 divisors, whose sum is σ = 157197044. Its totient is φ = 157197042.

The previous prime is 157197041. The next prime is 157197083. The reversal of 157197043 is 340791751.

It is a weak prime.

It is an emirp because it is prime and its reverse (340791751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157197043 - 2¹ = 157197041 is a prime.

Together with 157197041, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 157196993 and 157197011.

It is not a weakly prime, because it can be changed into another prime (157197041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78598521 + 78598522.

It is an arithmetic number, because the mean of its divisors is an integer number (78598522).

Almost surely, 2^157197043 is an apocalyptic number.

157197043 is a deficient number, since it is larger than the sum of its proper divisors (1).

157197043 is an equidigital number, since it uses as much as digits as its factorization.

157197043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 157197043 is about 12537.8244923113. The cubic root of 157197043 is about 539.6946639182.

The spelling of 157197043 in words is "one hundred fifty-seven million, one hundred ninety-seven thousand, forty-three".