55200939907 has 4 divisors (see below), whose sum is σ = 55957117240. Its totient is φ = 54444762576.

The previous prime is 55200939883. The next prime is 55200939947. The reversal of 55200939907 is 70993900255.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55200939907 - 2¹¹ = 55200937859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55200939947) 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, 378088557 + ... + 378088702.

It is an arithmetic number, because the mean of its divisors is an integer number (13989279310).

Almost surely, 2^55200939907 is an apocalyptic number.

55200939907 is a deficient number, since it is larger than the sum of its proper divisors (756177333).

55200939907 is an equidigital number, since it uses as much as digits as its factorization.

55200939907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756177332.

The product of its (nonzero) digits is 765450, while the sum is 49.

The spelling of 55200939907 in words is "fifty-five billion, two hundred million, nine hundred thirty-nine thousand, nine hundred seven".