157345 has 4 divisors (see below), whose sum is σ = 188820. Its totient is φ = 125872.

The previous prime is 157327. The next prime is 157349. The reversal of 157345 is 543751.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65536 + 91809 = 256^2 + 303^2 .

It is a cyclic number.

It is not a de Polignac number, because 157345 - 2⁷ = 157217 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 15730 + ... + 15739.

It is an arithmetic number, because the mean of its divisors is an integer number (47205).

2¹⁵⁷³⁴⁵ is an apocalyptic number.

It is an amenable number.

157345 is a deficient number, since it is larger than the sum of its proper divisors (31475).

157345 is an equidigital number, since it uses as much as digits as its factorization.

157345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31474.

The product of its digits is 2100, while the sum is 25.

The square root of 157345 is about 396.6673669462. The cubic root of 157345 is about 53.9863934625.

The spelling of 157345 in words is "one hundred fifty-seven thousand, three hundred forty-five".