552552661521 has 36 divisors (see below), whose sum is σ = 931463284752. Its totient is φ = 314715817584.

The previous prime is 552552661501. The next prime is 552552661547. The reversal of 552552661521 is 125166255255.

552552661521 is a `hidden beast` number, since 5 + 5 + 2 + 5 + 5 + 2 + 6 + 615 + 21 = 666.

It is not a de Polignac number, because 552552661521 - 2⁵ = 552552661489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (552552661501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1905255 + ... + 2176028.

It is an arithmetic number, because the mean of its divisors is an integer number (25873980132).

Almost surely, 2^552552661521 is an apocalyptic number.

It is an amenable number.

552552661521 is a deficient number, since it is larger than the sum of its proper divisors (378910623231).

552552661521 is a wasteful number, since it uses less digits than its factorization.

552552661521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081610 (or 4081600 counting only the distinct ones).

The product of its digits is 900000, while the sum is 45.

The spelling of 552552661521 in words is "five hundred fifty-two billion, five hundred fifty-two million, six hundred sixty-one thousand, five hundred twenty-one".