55005550501 has 4 divisors (see below), whose sum is σ = 60006055104. Its totient is φ = 50005045900.

The previous prime is 55005550493. The next prime is 55005550547. The reversal of 55005550501 is 10505550055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55005550501 - 2³ = 55005550493 is a prime.

It is a super-2 number, since 2×55005550501² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55005557501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2500252285 + ... + 2500252306.

It is an arithmetic number, because the mean of its divisors is an integer number (15001513776).

Almost surely, 2^55005550501 is an apocalyptic number.

It is an amenable number.

55005550501 is a deficient number, since it is larger than the sum of its proper divisors (5000504603).

55005550501 is a wasteful number, since it uses less digits than its factorization.

55005550501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000504602.

The product of its (nonzero) digits is 15625, while the sum is 31.

It can be divided in two parts, 55005 and 550501, that added together give a palindrome (605506).

The spelling of 55005550501 in words is "fifty-five billion, five million, five hundred fifty thousand, five hundred one".