451898 has 4 divisors (see below), whose sum is σ = 677850. Its totient is φ = 225948.

The previous prime is 451897. The next prime is 451901. The reversal of 451898 is 898154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 898154 = 2 ⋅449077.

It can be written as a sum of positive squares in only one way, i.e., 243049 + 208849 = 493^2 + 457^2 .

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (451897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112973 + ... + 112976.

2⁴⁵¹⁸⁹⁸ is an apocalyptic number.

451898 is a deficient number, since it is larger than the sum of its proper divisors (225952).

451898 is a wasteful number, since it uses less digits than its factorization.

451898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225951.

The product of its digits is 11520, while the sum is 35.

The square root of 451898 is about 672.2335903538. The cubic root of 451898 is about 76.7385295523.

The spelling of 451898 in words is "four hundred fifty-one thousand, eight hundred ninety-eight".