157145 has 8 divisors (see below), whose sum is σ = 192456. Its totient is φ = 123136.

The previous prime is 157141. The next prime is 157163. The reversal of 157145 is 541751.

Added to its reverse (541751) it gives a square (698896 = 836²).

It can be written as a sum of positive squares in 4 ways, for example, as 35344 + 121801 = 188^2 + 349^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 157145 - 2² = 157141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157145.

It is not an unprimeable number, because it can be changed into a prime (157141) 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, 32 + ... + 561.

It is an arithmetic number, because the mean of its divisors is an integer number (24057).

2¹⁵⁷¹⁴⁵ is an apocalyptic number.

It is an amenable number.

157145 is a deficient number, since it is larger than the sum of its proper divisors (35311).

157145 is an equidigital number, since it uses as much as digits as its factorization.

157145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651.

The product of its digits is 700, while the sum is 23.

The square root of 157145 is about 396.4151863892. The cubic root of 157145 is about 53.9635098698.

Adding to 157145 its reverse (541751), we get a palindrome (698896).

The spelling of 157145 in words is "one hundred fifty-seven thousand, one hundred forty-five".