157557 has 8 divisors (see below), whose sum is σ = 217440. Its totient is φ = 101360.

The previous prime is 157543. The next prime is 157559. The reversal of 157557 is 755751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157557 - 2⁷ = 157429 is a prime.

It is a super-3 number, since 3×157557³ = 11733683337263079, which contains 333 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 819 + ... + 992.

It is an arithmetic number, because the mean of its divisors is an integer number (27180).

2¹⁵⁷⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

157557 is a deficient number, since it is larger than the sum of its proper divisors (59883).

157557 is a wasteful number, since it uses less digits than its factorization.

157557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843.

The product of its digits is 6125, while the sum is 30.

The square root of 157557 is about 396.9345034133. The cubic root of 157557 is about 54.0106289091.

The spelling of 157557 in words is "one hundred fifty-seven thousand, five hundred fifty-seven".