157823 has 2 divisors, whose sum is σ = 157824. Its totient is φ = 157822.

The previous prime is 157813. The next prime is 157831. The reversal of 157823 is 328751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157823 - 2¹⁰ = 156799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157792 and 157801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157813) 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 as a sum of consecutive naturals, namely, 78911 + 78912.

It is an arithmetic number, because the mean of its divisors is an integer number (78912).

2¹⁵⁷⁸²³ is an apocalyptic number.

157823 is a deficient number, since it is larger than the sum of its proper divisors (1).

157823 is an equidigital number, since it uses as much as digits as its factorization.

157823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 26.

The square root of 157823 is about 397.2694299842. The cubic root of 157823 is about 54.0410068037.

The spelling of 157823 in words is "one hundred fifty-seven thousand, eight hundred twenty-three".