55433020 has 36 divisors (see below), whose sum is σ = 119259000. Its totient is φ = 21643104.

The previous prime is 55433017. The next prime is 55433029. The reversal of 55433020 is 2033455.

It is a junction number, because it is equal to n+sod(n) for n = 55432982 and 55433000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55433029) 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, 36231 + ... + 37729.

It is an arithmetic number, because the mean of its divisors is an integer number (3312750).

Almost surely, 2^55433020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55433020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59629500).

55433020 is an abundant number, since it is smaller than the sum of its proper divisors (63825980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55433020 is a wasteful number, since it uses less digits than its factorization.

55433020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594 (or 1549 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 55433020 is about 7445.3354524830. The cubic root of 55433020 is about 381.2906712859.

Adding to 55433020 its reverse (2033455), we get a palindrome (57466475).

The spelling of 55433020 in words is "fifty-five million, four hundred thirty-three thousand, twenty".