55555533 has 24 divisors (see below), whose sum is σ = 89683776. Its totient is φ = 32846400.

The previous prime is 55555531. The next prime is 55555543. The reversal of 55555533 is 33555555.

55555533 is a `hidden beast` number, since 55 + 55 + 553 + 3 = 666.

It is not a de Polignac number, because 55555533 - 2¹ = 55555531 is a prime.

It is a Curzon number.

It is a nialpdrome in base 10.

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 (55555531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2785 + ... + 10902.

It is an arithmetic number, because the mean of its divisors is an integer number (3736824).

Almost surely, 2^55555533 is an apocalyptic number.

It is an amenable number.

55555533 is a deficient number, since it is larger than the sum of its proper divisors (34128243).

55555533 is a wasteful number, since it uses less digits than its factorization.

55555533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13745 (or 13742 counting only the distinct ones).

The product of its digits is 140625, while the sum is 36.

The square root of 55555533 is about 7453.5584119265. The cubic root of 55555533 is about 381.5713625451.

The spelling of 55555533 in words is "fifty-five million, five hundred fifty-five thousand, five hundred thirty-three".