157888243 has 4 divisors (see below), whose sum is σ = 158101488. Its totient is φ = 157675000.

The previous prime is 157888223. The next prime is 157888259. The reversal of 157888243 is 342888751.

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 157888243 - 2⁹ = 157887731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157888193 and 157888202.

It is not an unprimeable number, because it can be changed into a prime (157888223) 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, 105508 + ... + 106993.

It is an arithmetic number, because the mean of its divisors is an integer number (39525372).

Almost surely, 2^157888243 is an apocalyptic number.

157888243 is a deficient number, since it is larger than the sum of its proper divisors (213245).

157888243 is an equidigital number, since it uses as much as digits as its factorization.

157888243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213244.

The product of its digits is 430080, while the sum is 46.

The square root of 157888243 is about 12565.3588488352. The cubic root of 157888243 is about 540.4845251116.

The spelling of 157888243 in words is "one hundred fifty-seven million, eight hundred eighty-eight thousand, two hundred forty-three".