55155205 has 16 divisors (see below), whose sum is σ = 77253120. Its totient is φ = 37014912.

The previous prime is 55155179. The next prime is 55155227. The reversal of 55155205 is 50255155.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55155205 - 2¹⁵ = 55122437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15120 + ... + 18409.

It is an arithmetic number, because the mean of its divisors is an integer number (4828320).

Almost surely, 2^55155205 is an apocalyptic number.

It is an amenable number.

55155205 is a deficient number, since it is larger than the sum of its proper divisors (22097915).

55155205 is a wasteful number, since it uses less digits than its factorization.

55155205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33588.

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 55155205 is about 7426.6550344014. The cubic root of 55155205 is about 380.6526296560.

The spelling of 55155205 in words is "fifty-five million, one hundred fifty-five thousand, two hundred five".