55202603561 has 8 divisors (see below), whose sum is σ = 63153670464. Its totient is φ = 47267781840.

The previous prime is 55202603551. The next prime is 55202603593. The reversal of 55202603561 is 16530620255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55202603561 - 2⁶ = 55202603497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55202603551) 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 7 ways as a sum of consecutive naturals, for example, 4054010 + ... + 4067603.

It is an arithmetic number, because the mean of its divisors is an integer number (7894208808).

Almost surely, 2^55202603561 is an apocalyptic number.

It is an amenable number.

55202603561 is a deficient number, since it is larger than the sum of its proper divisors (7951066903).

55202603561 is an equidigital number, since it uses as much as digits as its factorization.

55202603561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8122591.

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 55202603561 in words is "fifty-five billion, two hundred two million, six hundred three thousand, five hundred sixty-one".