42255553 has 2 divisors, whose sum is σ = 42255554. Its totient is φ = 42255552.

The previous prime is 42255547. The next prime is 42255569. The reversal of 42255553 is 35555224.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32626944 + 9628609 = 5712^2 + 3103^2 .

It is a cyclic number.

It is not a de Polignac number, because 42255553 - 2²¹ = 40158401 is a prime.

It is not a weakly prime, because it can be changed into another prime (42255593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21127776 + 21127777.

It is an arithmetic number, because the mean of its divisors is an integer number (21127777).

Almost surely, 2^42255553 is an apocalyptic number.

It is an amenable number.

42255553 is a deficient number, since it is larger than the sum of its proper divisors (1).

42255553 is an equidigital number, since it uses as much as digits as its factorization.

42255553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30000, while the sum is 31.

The square root of 42255553 is about 6500.4271398117. The cubic root of 42255553 is about 348.3062465806.

The spelling of 42255553 in words is "forty-two million, two hundred fifty-five thousand, five hundred fifty-three".