552442042555221 has 32 divisors (see below), whose sum is σ = 906749074782208. Its totient is φ = 291340941186240.

The previous prime is 552442042555187. The next prime is 552442042555223. The reversal of 552442042555221 is 122555240244255.

It is not a de Polignac number, because 552442042555221 - 2⁶ = 552442042555157 is a prime.

It is a super-2 number, since 2×552442042555221² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552442042555223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196725745 + ... + 199514166.

It is an arithmetic number, because the mean of its divisors is an integer number (28335908586944).

Almost surely, 2^{552442042555221} is an apocalyptic number.

It is an amenable number.

552442042555221 is a deficient number, since it is larger than the sum of its proper divisors (354307032226987).

552442042555221 is a wasteful number, since it uses less digits than its factorization.

552442042555221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396245041.

The product of its (nonzero) digits is 6400000, while the sum is 48.

Adding to 552442042555221 its reverse (122555240244255), we get a palindrome (674997282799476).

The spelling of 552442042555221 in words is "five hundred fifty-two trillion, four hundred forty-two billion, forty-two million, five hundred fifty-five thousand, two hundred twenty-one".