422052351557 has 4 divisors (see below), whose sum is σ = 424239151500. Its totient is φ = 419865551616.

The previous prime is 422052351509. The next prime is 422052351577. The reversal of 422052351557 is 755153250224.

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

It can be written as a sum of positive squares in 2 ways, for example, as 238567772356 + 183484579201 = 488434^2 + 428351^2 .

It is a cyclic number.

It is not a de Polignac number, because 422052351557 - 2³⁶ = 353332874821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422052351577) 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, 1093399682 + ... + 1093400067.

It is an arithmetic number, because the mean of its divisors is an integer number (106059787875).

Almost surely, 2^422052351557 is an apocalyptic number.

It is an amenable number.

422052351557 is a deficient number, since it is larger than the sum of its proper divisors (2186799943).

422052351557 is a wasteful number, since it uses less digits than its factorization.

422052351557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186799942.

The product of its (nonzero) digits is 420000, while the sum is 41.

The spelling of 422052351557 in words is "four hundred twenty-two billion, fifty-two million, three hundred fifty-one thousand, five hundred fifty-seven".