451138 has 4 divisors (see below), whose sum is σ = 676710. Its totient is φ = 225568.

The previous prime is 451109. The next prime is 451159. The reversal of 451138 is 831154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831154 = 2 ⋅415577.

It can be written as a sum of positive squares in only one way, i.e., 405769 + 45369 = 637^2 + 213^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112783 + ... + 112786.

2⁴⁵¹¹³⁸ is an apocalyptic number.

451138 is a deficient number, since it is larger than the sum of its proper divisors (225572).

451138 is a wasteful number, since it uses less digits than its factorization.

451138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225571.

The product of its digits is 480, while the sum is 22.

The square root of 451138 is about 671.6680727860. The cubic root of 451138 is about 76.6954859098.

The spelling of 451138 in words is "four hundred fifty-one thousand, one hundred thirty-eight".