55001600055601 has 4 divisors (see below), whose sum is σ = 56898206954100. Its totient is φ = 53104993157104.

The previous prime is 55001600055599. The next prime is 55001600055629. The reversal of 55001600055601 is 10655000610055.

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 15331140250000 + 39670459805601 = 3915500^2 + 6298449^2 .

It is a cyclic number.

It is not a de Polignac number, because 55001600055601 - 2¹ = 55001600055599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55001600055001) 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, 948303449206 + ... + 948303449263.

It is an arithmetic number, because the mean of its divisors is an integer number (14224551738525).

Almost surely, 2^{55001600055601} is an apocalyptic number.

It is an amenable number.

55001600055601 is a deficient number, since it is larger than the sum of its proper divisors (1896606898499).

55001600055601 is a wasteful number, since it uses less digits than its factorization.

55001600055601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896606898498.

The product of its (nonzero) digits is 22500, while the sum is 34.

Adding to 55001600055601 its reverse (10655000610055), we get a palindrome (65656600665656).

The spelling of 55001600055601 in words is "fifty-five trillion, one billion, six hundred million, fifty-five thousand, six hundred one".