55505433 has 8 divisors (see below), whose sum is σ = 74315296. Its totient is φ = 36849600.

The previous prime is 55505419. The next prime is 55505491. The reversal of 55505433 is 33450555.

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

It is not a de Polignac number, because 55505433 - 2¹⁶ = 55439897 is a prime.

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 55505433.

It is not an unprimeable number, because it can be changed into a prime (55505633) 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, 37663 + ... + 39108.

It is an arithmetic number, because the mean of its divisors is an integer number (9289412).

Almost surely, 2^55505433 is an apocalyptic number.

It is an amenable number.

55505433 is a deficient number, since it is larger than the sum of its proper divisors (18809863).

55505433 is a wasteful number, since it uses less digits than its factorization.

55505433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77015.

The product of its (nonzero) digits is 22500, while the sum is 30.

The square root of 55505433 is about 7450.1968430371. The cubic root of 55505433 is about 381.4566276507.

Adding to 55505433 its reverse (33450555), we get a palindrome (88955988).

The spelling of 55505433 in words is "fifty-five million, five hundred five thousand, four hundred thirty-three".