157866271 has 4 divisors (see below), whose sum is σ = 160222552. Its totient is φ = 155509992.

The previous prime is 157866263. The next prime is 157866281. The reversal of 157866271 is 172668751.

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 157866271 - 2³ = 157866263 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 (157866251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178040 + ... + 1178173.

It is an arithmetic number, because the mean of its divisors is an integer number (40055638).

Almost surely, 2^157866271 is an apocalyptic number.

157866271 is a deficient number, since it is larger than the sum of its proper divisors (2356281).

157866271 is an equidigital number, since it uses as much as digits as its factorization.

157866271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356280.

The product of its digits is 141120, while the sum is 43.

The square root of 157866271 is about 12564.4845099192. The cubic root of 157866271 is about 540.4594523625.

The spelling of 157866271 in words is "one hundred fifty-seven million, eight hundred sixty-six thousand, two hundred seventy-one".