145461 has 4 divisors (see below), whose sum is σ = 193952. Its totient is φ = 96972.

The previous prime is 145459. The next prime is 145463. The reversal of 145461 is 164541.

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.

It is an interprime number because it is at equal distance from previous prime (145459) and next prime (145463).

It is not a de Polignac number, because 145461 - 2¹ = 145459 is a prime.

It is a super-3 number, since 3×145461³ = 9233385358821543, which contains 333 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145463) 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, 24241 + ... + 24246.

It is an arithmetic number, because the mean of its divisors is an integer number (48488).

2¹⁴⁵⁴⁶¹ is an apocalyptic number.

It is an amenable number.

145461 is a deficient number, since it is larger than the sum of its proper divisors (48491).

145461 is an equidigital number, since it uses as much as digits as its factorization.

145461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48490.

The product of its digits is 480, while the sum is 21.

The square root of 145461 is about 381.3934975848. The cubic root of 145461 is about 52.5914957794.

It can be divided in two parts, 145 and 461, that added together give a palindrome (606).

The spelling of 145461 in words is "one hundred forty-five thousand, four hundred sixty-one".