55115333 has 32 divisors (see below), whose sum is σ = 72253440. Its totient is φ = 40824000.

The previous prime is 55115329. The next prime is 55115363. The reversal of 55115333 is 33351155.

It is not a de Polignac number, because 55115333 - 2² = 55115329 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55115323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219458 + ... + 219708.

It is an arithmetic number, because the mean of its divisors is an integer number (2257920).

Almost surely, 2^55115333 is an apocalyptic number.

It is an amenable number.

55115333 is a deficient number, since it is larger than the sum of its proper divisors (17138107).

55115333 is a wasteful number, since it uses less digits than its factorization.

55115333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417.

The product of its digits is 3375, while the sum is 26.

The square root of 55115333 is about 7423.9701642719. The cubic root of 55115333 is about 380.5608822535.

Adding to 55115333 its reverse (33351155), we get a palindrome (88466488).

The spelling of 55115333 in words is "fifty-five million, one hundred fifteen thousand, three hundred thirty-three".