450154 has 4 divisors (see below), whose sum is σ = 675234. Its totient is φ = 225076.

The previous prime is 450137. The next prime is 450161. The reversal of 450154 is 451054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 451054 = 2 ⋅225527.

It can be written as a sum of positive squares in only one way, i.e., 308025 + 142129 = 555^2 + 377^2 .

It is an Ulam number.

It is a nialpdrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112537 + ... + 112540.

2⁴⁵⁰¹⁵⁴ is an apocalyptic number.

450154 is a deficient number, since it is larger than the sum of its proper divisors (225080).

450154 is a wasteful number, since it uses less digits than its factorization.

450154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225079.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 450154 is about 670.9351682540. The cubic root of 450154 is about 76.6396838462.

Subtracting 450154 from its reverse (451054), we obtain a square (900 = 30²).

The spelling of 450154 in words is "four hundred fifty thousand, one hundred fifty-four".