55505358 has 32 divisors (see below), whose sum is σ = 124578720. Its totient is φ = 18316800.

The previous prime is 55505353. The next prime is 55505377. The reversal of 55505358 is 85350555.

55505358 is a `hidden beast` number, since 5 + 550 + 53 + 58 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505353) 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, 366 + ... + 10542.

It is an arithmetic number, because the mean of its divisors is an integer number (3893085).

Almost surely, 2^55505358 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55505358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62289360).

55505358 is an abundant number, since it is smaller than the sum of its proper divisors (69073362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55505358 is a wasteful number, since it uses less digits than its factorization.

55505358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10289 (or 10283 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The square root of 55505358 is about 7450.1918096113. The cubic root of 55505358 is about 381.4564558401.

The spelling of 55505358 in words is "fifty-five million, five hundred five thousand, three hundred fifty-eight".