442222051 has 4 divisors (see below), whose sum is σ = 449717400. Its totient is φ = 434726704.

The previous prime is 442222049. The next prime is 442222061. The reversal of 442222051 is 150222244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442222051 - 2¹ = 442222049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442222021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3747586 + ... + 3747703.

It is an arithmetic number, because the mean of its divisors is an integer number (112429350).

Almost surely, 2^442222051 is an apocalyptic number.

442222051 is a deficient number, since it is larger than the sum of its proper divisors (7495349).

442222051 is an equidigital number, since it uses as much as digits as its factorization.

442222051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7495348.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 442222051 is about 21029.0763230343. The cubic root of 442222051 is about 761.8686995773.

Adding to 442222051 its reverse (150222244), we get a palindrome (592444295).

The spelling of 442222051 in words is "four hundred forty-two million, two hundred twenty-two thousand, fifty-one".