157107 has 4 divisors (see below), whose sum is σ = 209480. Its totient is φ = 104736.

The previous prime is 157103. The next prime is 157109. The reversal of 157107 is 701751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 701751 = 3 ⋅233917.

It is not a de Polignac number, because 157107 - 2² = 157103 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157103) 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, 26182 + ... + 26187.

It is an arithmetic number, because the mean of its divisors is an integer number (52370).

2¹⁵⁷¹⁰⁷ is an apocalyptic number.

157107 is a deficient number, since it is larger than the sum of its proper divisors (52373).

157107 is an equidigital number, since it uses as much as digits as its factorization.

157107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52372.

The product of its (nonzero) digits is 245, while the sum is 21.

The square root of 157107 is about 396.3672539451. The cubic root of 157107 is about 53.9591597925.

Adding to 157107 its reverse (701751), we get a palindrome (858858).

Subtracting 157107 from its reverse (701751), we obtain a square (544644 = 738²).

The spelling of 157107 in words is "one hundred fifty-seven thousand, one hundred seven".