145954 has 4 divisors (see below), whose sum is σ = 218934. Its totient is φ = 72976.

The previous prime is 145949. The next prime is 145963. The reversal of 145954 is 459541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 459541 = 43 ⋅10687.

It can be written as a sum of positive squares in only one way, i.e., 140625 + 5329 = 375^2 + 73^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36487 + ... + 36490.

2¹⁴⁵⁹⁵⁴ is an apocalyptic number.

145954 is a deficient number, since it is larger than the sum of its proper divisors (72980).

145954 is an equidigital number, since it uses as much as digits as its factorization.

145954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72979.

The product of its digits is 3600, while the sum is 28.

The square root of 145954 is about 382.0392649977. The cubic root of 145954 is about 52.6508435793.

The spelling of 145954 in words is "one hundred forty-five thousand, nine hundred fifty-four".