145357 has 4 divisors (see below), whose sum is σ = 146556. Its totient is φ = 144160.

The previous prime is 145349. The next prime is 145361. The reversal of 145357 is 753541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 753541 = 359 ⋅2099.

It can be written as a sum of positive squares in 2 ways, for example, as 90601 + 54756 = 301^2 + 234^2 .

It is a cyclic number.

It is not a de Polignac number, because 145357 - 2³ = 145349 is a prime.

It is a super-2 number, since 2×145357² = 42257314898, which contains 22 as substring.

It is a Duffinian 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 (145307) 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 in 3 ways as a sum of consecutive naturals, for example, 394 + ... + 667.

It is an arithmetic number, because the mean of its divisors is an integer number (36639).

2¹⁴⁵³⁵⁷ is an apocalyptic number.

It is an amenable number.

145357 is a deficient number, since it is larger than the sum of its proper divisors (1199).

145357 is a wasteful number, since it uses less digits than its factorization.

145357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198.

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

The square root of 145357 is about 381.2571310808. The cubic root of 145357 is about 52.5789590409.

Adding to 145357 its reverse (753541), we get a palindrome (898898).

The spelling of 145357 in words is "one hundred forty-five thousand, three hundred fifty-seven".