442255157 has 2 divisors, whose sum is σ = 442255158. Its totient is φ = 442255156.

The previous prime is 442255127. The next prime is 442255189. The reversal of 442255157 is 751552244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418038916 + 24216241 = 20446^2 + 4921^2 .

It is a cyclic number.

It is not a de Polignac number, because 442255157 - 2¹⁴ = 442238773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442255127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221127578 + 221127579.

It is an arithmetic number, because the mean of its divisors is an integer number (221127579).

Almost surely, 2^442255157 is an apocalyptic number.

It is an amenable number.

442255157 is a deficient number, since it is larger than the sum of its proper divisors (1).

442255157 is an equidigital number, since it uses as much as digits as its factorization.

442255157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56000, while the sum is 35.

The square root of 442255157 is about 21029.8634565230. The cubic root of 442255157 is about 761.8877109885.

The spelling of 442255157 in words is "four hundred forty-two million, two hundred fifty-five thousand, one hundred fifty-seven".