157198871 has 2 divisors, whose sum is σ = 157198872. Its totient is φ = 157198870.

The previous prime is 157198849. The next prime is 157198883. The reversal of 157198871 is 178891751.

It is a strong prime.

It is an emirp because it is prime and its reverse (178891751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157198871 - 2⁶ = 157198807 is a prime.

It is a super-2 number, since 2×157198871² = 49422970087349282, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157198801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78599435 + 78599436.

It is an arithmetic number, because the mean of its divisors is an integer number (78599436).

Almost surely, 2^157198871 is an apocalyptic number.

157198871 is a deficient number, since it is larger than the sum of its proper divisors (1).

157198871 is an equidigital number, since it uses as much as digits as its factorization.

157198871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 47.

The square root of 157198871 is about 12537.8973915087. The cubic root of 157198871 is about 539.6967558957.

The spelling of 157198871 in words is "one hundred fifty-seven million, one hundred ninety-eight thousand, eight hundred seventy-one".