145454 has 4 divisors (see below), whose sum is σ = 218184. Its totient is φ = 72726.

The previous prime is 145451. The next prime is 145459. The reversal of 145454 is 454541.

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

It is a super-2 number, since 2×145454² = 42313732232, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145454.

It is not an unprimeable number, because it can be changed into a prime (145451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36362 + ... + 36365.

It is an arithmetic number, because the mean of its divisors is an integer number (54546).

2¹⁴⁵⁴⁵⁴ is an apocalyptic number.

145454 is a deficient number, since it is larger than the sum of its proper divisors (72730).

145454 is an equidigital number, since it uses as much as digits as its factorization.

145454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72729.

The product of its digits is 1600, while the sum is 23.

The square root of 145454 is about 381.3843206006. The cubic root of 145454 is about 52.5906521481.

Adding to 145454 its reverse (454541), we get a palindrome (599995).

The spelling of 145454 in words is "one hundred forty-five thousand, four hundred fifty-four".