55081433 has 8 divisors (see below), whose sum is σ = 60349536. Its totient is φ = 49856800.

The previous prime is 55081421. The next prime is 55081457. The reversal of 55081433 is 33418055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55081433 - 2²⁰ = 54032857 is a prime.

It is a super-2 number, since 2×55081433² = 6067928522666978, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55081396 and 55081405.

It is not an unprimeable number, because it can be changed into a prime (55081483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8183 + ... + 13308.

It is an arithmetic number, because the mean of its divisors is an integer number (7543692).

Almost surely, 2^55081433 is an apocalyptic number.

It is an amenable number.

55081433 is a deficient number, since it is larger than the sum of its proper divisors (5268103).

55081433 is a wasteful number, since it uses less digits than its factorization.

55081433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21735.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 55081433 is about 7421.6866681368. The cubic root of 55081433 is about 380.4828419022.

Adding to 55081433 its reverse (33418055), we get a palindrome (88499488).

The spelling of 55081433 in words is "fifty-five million, eighty-one thousand, four hundred thirty-three".