157389 has 8 divisors (see below), whose sum is σ = 219072. Its totient is φ = 100320.

The previous prime is 157363. The next prime is 157393. The reversal of 157389 is 983751.

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

It is not a de Polignac number, because 157389 - 2⁸ = 157133 is a prime.

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 (157349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1072 + ... + 1209.

It is an arithmetic number, because the mean of its divisors is an integer number (27384).

157389 is a Friedman number, since it can be written as 8*(3*1)^9-75, using all its digits and the basic arithmetic operations.

2¹⁵⁷³⁸⁹ is an apocalyptic number.

It is an amenable number.

157389 is a deficient number, since it is larger than the sum of its proper divisors (61683).

157389 is a wasteful number, since it uses less digits than its factorization.

157389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307.

The product of its digits is 7560, while the sum is 33.

The square root of 157389 is about 396.7228251563. The cubic root of 157389 is about 53.9914252503.

The spelling of 157389 in words is "one hundred fifty-seven thousand, three hundred eighty-nine".