552165021 has 18 divisors (see below), whose sum is σ = 816575838. Its totient is φ = 359538480.

The previous prime is 552165001. The next prime is 552165041. The reversal of 552165021 is 120561255.

552165021 is a `hidden beast` number, since 5 + 5 + 2 + 1 + 650 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (552165001) and next prime (552165041).

It can be written as a sum of positive squares in only one way, i.e., 458559396 + 93605625 = 21414^2 + 9675^2 .

It is not a de Polignac number, because 552165021 - 2¹¹ = 552162973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552165001) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 51 + ... + 33231.

Almost surely, 2^552165021 is an apocalyptic number.

It is an amenable number.

552165021 is a deficient number, since it is larger than the sum of its proper divisors (264410817).

552165021 is a wasteful number, since it uses less digits than its factorization.

552165021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33273 (or 33227 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 552165021 is about 23498.1918666097. The cubic root of 552165021 is about 820.3949223021.

The spelling of 552165021 in words is "five hundred fifty-two million, one hundred sixty-five thousand, twenty-one".