157719871 has 4 divisors (see below), whose sum is σ = 157816152. Its totient is φ = 157623592.

The previous prime is 157719853. The next prime is 157719899. The reversal of 157719871 is 178917751.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157719871 - 2¹⁷ = 157588799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157719841) 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 in 3 ways as a sum of consecutive naturals, for example, 45640 + ... + 48973.

It is an arithmetic number, because the mean of its divisors is an integer number (39454038).

Almost surely, 2^157719871 is an apocalyptic number.

157719871 is a deficient number, since it is larger than the sum of its proper divisors (96281).

157719871 is an equidigital number, since it uses as much as digits as its factorization.

157719871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96280.

The product of its digits is 123480, while the sum is 46.

The square root of 157719871 is about 12558.6572132533. The cubic root of 157719871 is about 540.2923325703.

The spelling of 157719871 in words is "one hundred fifty-seven million, seven hundred nineteen thousand, eight hundred seventy-one".