157558 has 4 divisors (see below), whose sum is σ = 236340. Its totient is φ = 78778.

The previous prime is 157543. The next prime is 157559. The reversal of 157558 is 855751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 855751 = 13 ⋅65827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39388 + ... + 39391.

It is an arithmetic number, because the mean of its divisors is an integer number (59085).

2¹⁵⁷⁵⁵⁸ is an apocalyptic number.

157558 is a deficient number, since it is larger than the sum of its proper divisors (78782).

157558 is an equidigital number, since it uses as much as digits as its factorization.

157558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78781.

The product of its digits is 7000, while the sum is 31.

The square root of 157558 is about 396.9357630650. The cubic root of 157558 is about 54.0107431757.

The spelling of 157558 in words is "one hundred fifty-seven thousand, five hundred fifty-eight".