55601055561 has 8 divisors (see below), whose sum is σ = 74625699904. Its totient is φ = 36821890800.

The previous prime is 55601055553. The next prime is 55601055569. The reversal of 55601055561 is 16555010655.

It is an interprime number because it is at equal distance from previous prime (55601055553) and next prime (55601055569).

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

It is not a de Polignac number, because 55601055561 - 2³ = 55601055553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55601055569) 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, 61369366 + ... + 61370271.

It is an arithmetic number, because the mean of its divisors is an integer number (9328212488).

Almost surely, 2^55601055561 is an apocalyptic number.

It is an amenable number.

55601055561 is a deficient number, since it is larger than the sum of its proper divisors (19024644343).

55601055561 is a wasteful number, since it uses less digits than its factorization.

55601055561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122739791.

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 55601055561 in words is "fifty-five billion, six hundred one million, fifty-five thousand, five hundred sixty-one".