55520433 has 12 divisors (see below), whose sum is σ = 80393040. Its totient is φ = 36922776.

The previous prime is 55520401. The next prime is 55520441. The reversal of 55520433 is 33402555.

It is not a de Polignac number, because 55520433 - 2⁵ = 55520401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55520397 and 55520406.

It is not an unprimeable number, because it can be changed into a prime (55520233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3591 + ... + 11132.

It is an arithmetic number, because the mean of its divisors is an integer number (6699420).

Almost surely, 2^55520433 is an apocalyptic number.

It is an amenable number.

55520433 is a deficient number, since it is larger than the sum of its proper divisors (24872607).

55520433 is a wasteful number, since it uses less digits than its factorization.

55520433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15148 (or 15145 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 55520433 is about 7451.2034598446. The cubic root of 55520433 is about 381.4909866540.

Adding to 55520433 its reverse (33402555), we get a palindrome (88922988).

The spelling of 55520433 in words is "fifty-five million, five hundred twenty thousand, four hundred thirty-three".