55100331 has 80 divisors (see below), whose sum is σ = 99525888. Its totient is φ = 29937600.

The previous prime is 55100321. The next prime is 55100369. The reversal of 55100331 is 13300155.

It is a happy number.

55100331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55100331 - 2⁶ = 55100267 is a prime.

It is a super-2 number, since 2×55100331² = 6072092952619122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55100321) 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 79 ways as a sum of consecutive naturals, for example, 776026 + ... + 776096.

Almost surely, 2^55100331 is an apocalyptic number.

55100331 is a deficient number, since it is larger than the sum of its proper divisors (44425557).

55100331 is a wasteful number, since it uses less digits than its factorization.

55100331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 55100331 is about 7422.9597196806. The cubic root of 55100331 is about 380.5263504688.

Adding to 55100331 its reverse (13300155), we get a palindrome (68400486).

The spelling of 55100331 in words is "fifty-five million, one hundred thousand, three hundred thirty-one".