157555 has 4 divisors (see below), whose sum is σ = 189072. Its totient is φ = 126040.

The previous prime is 157543. The next prime is 157559. The reversal of 157555 is 555751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555751 = 7 ⋅79393.

It is not a de Polignac number, because 157555 - 2⁵ = 157523 is a prime.

It is a Duffinian 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 in 3 ways as a sum of consecutive naturals, for example, 15751 + ... + 15760.

It is an arithmetic number, because the mean of its divisors is an integer number (47268).

2¹⁵⁷⁵⁵⁵ is an apocalyptic number.

157555 is a deficient number, since it is larger than the sum of its proper divisors (31517).

157555 is an equidigital number, since it uses as much as digits as its factorization.

157555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31516.

The product of its digits is 4375, while the sum is 28.

The square root of 157555 is about 396.9319840980. The cubic root of 157555 is about 54.0104003745.

The spelling of 157555 in words is "one hundred fifty-seven thousand, five hundred fifty-five".