442251 has 6 divisors (see below), whose sum is σ = 638820. Its totient is φ = 294828.

The previous prime is 442243. The next prime is 442271. The reversal of 442251 is 152244.

It is not a de Polignac number, because 442251 - 2³ = 442243 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442251.

It is not an unprimeable number, because it can be changed into a prime (442201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24561 + ... + 24578.

It is an arithmetic number, because the mean of its divisors is an integer number (106470).

2⁴⁴²²⁵¹ is an apocalyptic number.

442251 is a deficient number, since it is larger than the sum of its proper divisors (196569).

442251 is a wasteful number, since it uses less digits than its factorization.

442251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49145 (or 49142 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 442251 is about 665.0195485849. The cubic root of 442251 is about 76.1885323847.

Adding to 442251 its reverse (152244), we get a palindrome (594495).

It can be divided in two parts, 4422 and 51, that multiplied together give a palindrome (225522).

The spelling of 442251 in words is "four hundred forty-two thousand, two hundred fifty-one".