100157 has 4 divisors (see below), whose sum is σ = 102336. Its totient is φ = 97980.

The previous prime is 100153. The next prime is 100169. The reversal of 100157 is 751001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100157 - 2² = 100153 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 (100151) 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, 1019 + ... + 1112.

It is an arithmetic number, because the mean of its divisors is an integer number (25584).

2¹⁰⁰¹⁵⁷ is an apocalyptic number.

It is an amenable number.

100157 is a deficient number, since it is larger than the sum of its proper divisors (2179).

100157 is an equidigital number, since it uses as much as digits as its factorization.

100157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178.

The product of its (nonzero) digits is 35, while the sum is 14.

The square root of 100157 is about 316.4759074558. The cubic root of 100157 is about 46.4401666165.

Adding to 100157 its reverse (751001), we get a palindrome (851158).

The spelling of 100157 in words is "one hundred thousand, one hundred fifty-seven".