157285671 has 4 divisors (see below), whose sum is σ = 209714232. Its totient is φ = 104857112.

The previous prime is 157285669. The next prime is 157285679. The reversal of 157285671 is 176582751.

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 157285671 - 2¹ = 157285669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157285679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26214276 + ... + 26214281.

It is an arithmetic number, because the mean of its divisors is an integer number (52428558).

Almost surely, 2^157285671 is an apocalyptic number.

157285671 is a deficient number, since it is larger than the sum of its proper divisors (52428561).

157285671 is an equidigital number, since it uses as much as digits as its factorization.

157285671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52428560.

The product of its digits is 117600, while the sum is 42.

The square root of 157285671 is about 12541.3584192463. The cubic root of 157285671 is about 539.7960718313.

The spelling of 157285671 in words is "one hundred fifty-seven million, two hundred eighty-five thousand, six hundred seventy-one".