145393 has 4 divisors (see below), whose sum is σ = 146160. Its totient is φ = 144628.

The previous prime is 145391. The next prime is 145399. The reversal of 145393 is 393541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 145393 - 2¹ = 145391 is a prime.

It is a super-2 number, since 2×145393² = 42278248898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145391) 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, 138 + ... + 556.

It is an arithmetic number, because the mean of its divisors is an integer number (36540).

2¹⁴⁵³⁹³ is an apocalyptic number.

It is an amenable number.

145393 is a deficient number, since it is larger than the sum of its proper divisors (767).

145393 is an equidigital number, since it uses as much as digits as its factorization.

145393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766.

The product of its digits is 1620, while the sum is 25.

The square root of 145393 is about 381.3043403897. The cubic root of 145393 is about 52.5832993577.

The spelling of 145393 in words is "one hundred forty-five thousand, three hundred ninety-three".