55515055601 has 4 divisors (see below), whose sum is σ = 55562063604. Its totient is φ = 55468047600.

The previous prime is 55515055579. The next prime is 55515055613. The reversal of 55515055601 is 10655051555.

It is a happy number.

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 45421839376 + 10093216225 = 213124^2 + 100465^2 .

It is a cyclic number.

It is not a de Polignac number, because 55515055601 - 2¹⁰ = 55515054577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55515855601) 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, 23502230 + ... + 23504591.

It is an arithmetic number, because the mean of its divisors is an integer number (13890515901).

Almost surely, 2^55515055601 is an apocalyptic number.

It is an amenable number.

55515055601 is a deficient number, since it is larger than the sum of its proper divisors (47008003).

55515055601 is a wasteful number, since it uses less digits than its factorization.

55515055601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47008002.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 55515055601 in words is "fifty-five billion, five hundred fifteen million, fifty-five thousand, six hundred one".