552361561 has 4 divisors (see below), whose sum is σ = 555223732. Its totient is φ = 549499392.

The previous prime is 552361547. The next prime is 552361571. The reversal of 552361561 is 165163255.

552361561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165163255 = 5 ⋅33032651.

It can be written as a sum of positive squares in 2 ways, for example, as 181413961 + 370947600 = 13469^2 + 19260^2 .

It is a cyclic number.

It is not a de Polignac number, because 552361561 - 2¹⁷ = 552230489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (552361571) 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, 1430796 + ... + 1431181.

It is an arithmetic number, because the mean of its divisors is an integer number (138805933).

Almost surely, 2^552361561 is an apocalyptic number.

It is an amenable number.

552361561 is a deficient number, since it is larger than the sum of its proper divisors (2862171).

552361561 is a wasteful number, since it uses less digits than its factorization.

552361561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862170.

The product of its digits is 27000, while the sum is 34.

The square root of 552361561 is about 23502.3735184343. The cubic root of 552361561 is about 820.4922490582.

The spelling of 552361561 in words is "five hundred fifty-two million, three hundred sixty-one thousand, five hundred sixty-one".