55335331 has 4 divisors (see below), whose sum is σ = 55577200. Its totient is φ = 55093464.

The previous prime is 55335307. The next prime is 55335337. The reversal of 55335331 is 13353355.

55335331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55335331 is a prime.

It is a super-2 number, since 2×55335331² = 6123997713759122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55335331.

It is not an unprimeable number, because it can be changed into a prime (55335337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120591 + ... + 121048.

It is an arithmetic number, because the mean of its divisors is an integer number (13894300).

Almost surely, 2^55335331 is an apocalyptic number.

55335331 is a deficient number, since it is larger than the sum of its proper divisors (241869).

55335331 is a wasteful number, since it uses less digits than its factorization.

55335331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241868.

The product of its digits is 10125, while the sum is 28.

The square root of 55335331 is about 7438.7721433043. The cubic root of 55335331 is about 381.0665581348.

Adding to 55335331 its reverse (13353355), we get a palindrome (68688686).

The spelling of 55335331 in words is "fifty-five million, three hundred thirty-five thousand, three hundred thirty-one".