552620161 has 4 divisors (see below), whose sum is σ = 554770692. Its totient is φ = 550469632.

The previous prime is 552620153. The next prime is 552620171. The reversal of 552620161 is 161026255.

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 472410225 + 80209936 = 21735^2 + 8956^2 .

It is a cyclic number.

It is not a de Polignac number, because 552620161 - 2³ = 552620153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (552620141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074880 + ... + 1075393.

It is an arithmetic number, because the mean of its divisors is an integer number (138692673).

Almost surely, 2^552620161 is an apocalyptic number.

It is an amenable number.

552620161 is a deficient number, since it is larger than the sum of its proper divisors (2150531).

552620161 is a wasteful number, since it uses less digits than its factorization.

552620161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150530.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 552620161 is about 23507.8744466615. The cubic root of 552620161 is about 820.6202728064.

The spelling of 552620161 in words is "five hundred fifty-two million, six hundred twenty thousand, one hundred sixty-one".