55550055 has 16 divisors (see below), whose sum is σ = 96960384. Its totient is φ = 26933280.

The previous prime is 55550041. The next prime is 55550059. The reversal of 55550055 is 55005555.

It is not a de Polignac number, because 55550055 - 2¹¹ = 55548007 is a prime.

It is a super-2 number, since 2×55550055² = 6171617221006050, which contains 22 as substring.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55550059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168169 + ... + 168498.

It is an arithmetic number, because the mean of its divisors is an integer number (6060024).

Almost surely, 2^55550055 is an apocalyptic number.

55550055 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55550055 is a deficient number, since it is larger than the sum of its proper divisors (41410329).

55550055 is a wasteful number, since it uses less digits than its factorization.

55550055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336686.

The product of its (nonzero) digits is 15625, while the sum is 30.

The square root of 55550055 is about 7453.1909273814. The cubic root of 55550055 is about 381.5588206402.

It can be divided in two parts, 555500 and 55, that added together give a palindrome (555555).

The spelling of 55550055 in words is "fifty-five million, five hundred fifty thousand, fifty-five".