55310311 has 16 divisors (see below), whose sum is σ = 66908160. Its totient is φ = 44664480.

The previous prime is 55310303. The next prime is 55310329. The reversal of 55310311 is 11301355.

It is not a de Polignac number, because 55310311 - 2³ = 55310303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55310351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25146 + ... + 27256.

It is an arithmetic number, because the mean of its divisors is an integer number (4181760).

Almost surely, 2^55310311 is an apocalyptic number.

55310311 is a deficient number, since it is larger than the sum of its proper divisors (11597849).

55310311 is a wasteful number, since it uses less digits than its factorization.

55310311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 55310311 is about 7437.0902240056. The cubic root of 55310311 is about 381.0091160964.

Adding to 55310311 its reverse (11301355), we get a palindrome (66611666).

The spelling of 55310311 in words is "fifty-five million, three hundred ten thousand, three hundred eleven".