55388355 has 24 divisors (see below), whose sum is σ = 97413456. Its totient is φ = 26854080.

The previous prime is 55388327. The next prime is 55388357.

55388355 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55388355 - 2¹⁰ = 55387331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55388357) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13444 + ... + 17073.

It is an arithmetic number, because the mean of its divisors is an integer number (4058894).

Almost surely, 2^55388355 is an apocalyptic number.

55388355 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55388355 is a deficient number, since it is larger than the sum of its proper divisors (42025101).

55388355 is a wasteful number, since it uses less digits than its factorization.

55388355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30547 (or 30536 counting only the distinct ones).

The product of its digits is 360000, while the sum is 42.

The square root of 55388355 is about 7442.3353189708. The cubic root of 55388355 is about 381.1882358065.

The spelling of 55388355 in words is "fifty-five million, three hundred eighty-eight thousand, three hundred fifty-five".