55050505501 has 4 divisors (see below), whose sum is σ = 55192023900. Its totient is φ = 54908987104.

The previous prime is 55050505487. The next prime is 55050505507. The reversal of 55050505501 is 10550505055.

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 5122837476 + 49927668025 = 71574^2 + 223445^2 .

It is a cyclic number.

It is not a de Polignac number, because 55050505501 - 2¹⁷ = 55050374429 is a prime.

It is a super-2 number, since 2×55050505501² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55050505507) 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, 70758616 + ... + 70759393.

It is an arithmetic number, because the mean of its divisors is an integer number (13798005975).

Almost surely, 2^55050505501 is an apocalyptic number.

It is an amenable number.

55050505501 is a deficient number, since it is larger than the sum of its proper divisors (141518399).

55050505501 is a wasteful number, since it uses less digits than its factorization.

55050505501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141518398.

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

The spelling of 55050505501 in words is "fifty-five billion, fifty million, five hundred five thousand, five hundred one".