55007424 has 126 divisors (see below), whose sum is σ = 164974524. Its totient is φ = 18195840.

The previous prime is 55007399. The next prime is 55007431. The reversal of 55007424 is 42470055.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 419839 + ... + 419969.

Almost surely, 2^55007424 is an apocalyptic number.

55007424 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55007424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82487262).

55007424 is an abundant number, since it is smaller than the sum of its proper divisors (109967100).

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

55007424 is an frugal number, since it uses more digits than its factorization.

55007424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 55007424 is about 7416.6989961842. The cubic root of 55007424 is about 380.3123562876.

Adding to 55007424 its reverse (42470055), we get a palindrome (97477479).

The spelling of 55007424 in words is "fifty-five million, seven thousand, four hundred twenty-four".