55500000007 has 4 divisors (see below), whose sum is σ = 55567437040. Its totient is φ = 55432562976.

The previous prime is 55499999969. The next prime is 55500000043. The reversal of 55500000007 is 70000000555.

55500000007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55500000007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55500006007) 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, 33717282 + ... + 33718927.

It is an arithmetic number, because the mean of its divisors is an integer number (13891859260).

Almost surely, 2^55500000007 is an apocalyptic number.

55500000007 is a deficient number, since it is larger than the sum of its proper divisors (67437033).

55500000007 is an equidigital number, since it uses as much as digits as its factorization.

55500000007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67437032.

The product of its (nonzero) digits is 875, while the sum is 22.

The spelling of 55500000007 in words is "fifty-five billion, five hundred million, seven", and thus it is an aban number.