422155565 has 16 divisors (see below), whose sum is σ = 545991600. Its totient is φ = 311496192.

The previous prime is 422155541. The next prime is 422155567. The reversal of 422155565 is 565551224.

It can be written as a sum of positive squares in 8 ways, for example, as 20994724 + 401160841 = 4582^2 + 20029^2 .

It is a cyclic number.

It is not a de Polignac number, because 422155565 - 2⁸ = 422155309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422155567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134231 + ... + 137339.

It is an arithmetic number, because the mean of its divisors is an integer number (34124475).

Almost surely, 2^422155565 is an apocalyptic number.

It is an amenable number.

422155565 is a deficient number, since it is larger than the sum of its proper divisors (123836035).

422155565 is a wasteful number, since it uses less digits than its factorization.

422155565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5216.

The product of its digits is 60000, while the sum is 35.

The square root of 422155565 is about 20546.4246281439. The cubic root of 422155565 is about 750.1662238975.

The spelling of 422155565 in words is "four hundred twenty-two million, one hundred fifty-five thousand, five hundred sixty-five".