145373 has 4 divisors (see below), whose sum is σ = 149340. Its totient is φ = 141408.

The previous prime is 145361. The next prime is 145381. The reversal of 145373 is 373541.

It is a happy number.

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 76729 + 68644 = 277^2 + 262^2 .

It is a cyclic number.

It is not a de Polignac number, because 145373 - 2¹⁰ = 144349 is a prime.

It is a super-2 number, since 2×145373² = 42266618258, 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 (145303) 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, 1928 + ... + 2001.

It is an arithmetic number, because the mean of its divisors is an integer number (37335).

2¹⁴⁵³⁷³ is an apocalyptic number.

It is an amenable number.

145373 is a deficient number, since it is larger than the sum of its proper divisors (3967).

145373 is an equidigital number, since it uses as much as digits as its factorization.

145373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3966.

The product of its digits is 1260, while the sum is 23.

The square root of 145373 is about 381.2781137175. The cubic root of 145373 is about 52.5808881590.

The spelling of 145373 in words is "one hundred forty-five thousand, three hundred seventy-three".