157869 has 10 divisors (see below), whose sum is σ = 235950. Its totient is φ = 105192.

The previous prime is 157867. The next prime is 157877. The reversal of 157869 is 968751.

157869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 149769 + 8100 = 387^2 + 90^2 .

It is not a de Polignac number, because 157869 - 2¹ = 157867 is a prime.

It is a super-2 number, since 2×157869² = 49845242322, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157867) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 894 + ... + 1055.

It is an arithmetic number, because the mean of its divisors is an integer number (23595).

2¹⁵⁷⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

157869 is a deficient number, since it is larger than the sum of its proper divisors (78081).

157869 is an equidigital number, since it uses as much as digits as its factorization.

157869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961 (or 1952 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 157869 is about 397.3273209836. The cubic root of 157869 is about 54.0462566613.

The spelling of 157869 in words is "one hundred fifty-seven thousand, eight hundred sixty-nine".