55023424 has 56 divisors (see below), whose sum is σ = 116970048. Its totient is φ = 25589760.

The previous prime is 55023401. The next prime is 55023427. The reversal of 55023424 is 42432055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55023427) 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, 111819 + ... + 112309.

Almost surely, 2^55023424 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 55023424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58485024).

55023424 is an abundant number, since it is smaller than the sum of its proper divisors (61946624).

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

55023424 is a wasteful number, since it uses less digits than its factorization.

55023424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 55023424 is about 7417.7775647427. Note that the first 3 decimals coincide. The cubic root of 55023424 is about 380.3492265096.

Adding to 55023424 its reverse (42432055), we get a palindrome (97455479).

The spelling of 55023424 in words is "fifty-five million, twenty-three thousand, four hundred twenty-four".