552361311521 has 4 divisors (see below), whose sum is σ = 552446023044. Its totient is φ = 552276600000.

The previous prime is 552361311499. The next prime is 552361311529. The reversal of 552361311521 is 125113163255.

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 362819499025 + 189541812496 = 602345^2 + 435364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-552361311521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (552361311529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42345980 + ... + 42359021.

It is an arithmetic number, because the mean of its divisors is an integer number (138111505761).

Almost surely, 2^552361311521 is an apocalyptic number.

It is an amenable number.

552361311521 is a deficient number, since it is larger than the sum of its proper divisors (84711523).

552361311521 is an equidigital number, since it uses as much as digits as its factorization.

552361311521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84711522.

The product of its digits is 27000, while the sum is 35.

Adding to 552361311521 its reverse (125113163255), we get a palindrome (677474474776).

The spelling of 552361311521 in words is "five hundred fifty-two billion, three hundred sixty-one million, three hundred eleven thousand, five hundred twenty-one".