157845 has 16 divisors (see below), whose sum is σ = 267840. Its totient is φ = 79104.

The previous prime is 157841. The next prime is 157867. The reversal of 157845 is 548751.

157845 = 85² + 86² + ... + 102².

It is not a de Polignac number, because 157845 - 2² = 157841 is a prime.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55 + ... + 564.

It is an arithmetic number, because the mean of its divisors is an integer number (16740).

2¹⁵⁷⁸⁴⁵ is an apocalyptic number.

157845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157845 is a deficient number, since it is larger than the sum of its proper divisors (109995).

157845 is a wasteful number, since it uses less digits than its factorization.

157845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its digits is 5600, while the sum is 30.

The square root of 157845 is about 397.2971180364. The cubic root of 157845 is about 54.0435177324.

The spelling of 157845 in words is "one hundred fifty-seven thousand, eight hundred forty-five".