55550554550 has 24 divisors (see below), whose sum is σ = 103428386112. Its totient is φ = 22197780000.

The previous prime is 55550554541. The next prime is 55550554559. The reversal of 55550554550 is 5545505555.

It is an interprime number because it is at equal distance from previous prime (55550554541) and next prime (55550554559).

It is a super-2 number, since 2×55550554550² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55550554559) 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 11 ways as a sum of consecutive naturals, for example, 511001 + ... + 610100.

It is an arithmetic number, because the mean of its divisors is an integer number (4309516088).

Almost surely, 2^55550554550 is an apocalyptic number.

55550554550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55550554550 is a deficient number, since it is larger than the sum of its proper divisors (47877831562).

55550554550 is a wasteful number, since it uses less digits than its factorization.

55550554550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122104 (or 1122099 counting only the distinct ones).

The product of its (nonzero) digits is 1562500, while the sum is 44.

The spelling of 55550554550 in words is "fifty-five billion, five hundred fifty million, five hundred fifty-four thousand, five hundred fifty".