157284871 has 4 divisors (see below), whose sum is σ = 158108544. Its totient is φ = 156461200.

The previous prime is 157284863. The next prime is 157284887. The reversal of 157284871 is 178482751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178482751 = 19 ⋅9393829.

It is a cyclic number.

It is not a de Polignac number, because 157284871 - 2³ = 157284863 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 (157284571) 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, 411550 + ... + 411931.

It is an arithmetic number, because the mean of its divisors is an integer number (39527136).

Almost surely, 2^157284871 is an apocalyptic number.

157284871 is a deficient number, since it is larger than the sum of its proper divisors (823673).

157284871 is an equidigital number, since it uses as much as digits as its factorization.

157284871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823672.

The product of its digits is 125440, while the sum is 43.

The square root of 157284871 is about 12541.3265247341. The cubic root of 157284871 is about 539.7951566439.

The spelling of 157284871 in words is "one hundred fifty-seven million, two hundred eighty-four thousand, eight hundred seventy-one".