55551424 has 14 divisors (see below), whose sum is σ = 110234984. Its totient is φ = 27775680.

The previous prime is 55551409. The next prime is 55551437. The reversal of 55551424 is 42415555.

55551424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433932 + ... + 434059.

Almost surely, 2^55551424 is an apocalyptic number.

It is an amenable number.

55551424 is a deficient number, since it is larger than the sum of its proper divisors (54683560).

55551424 is an equidigital number, since it uses as much as digits as its factorization.

55551424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868003 (or 867993 counting only the distinct ones).

The product of its digits is 20000, while the sum is 31.

The square root of 55551424 is about 7453.2827666740. The cubic root of 55551424 is about 381.5619550490.

Adding to 55551424 its reverse (42415555), we get a palindrome (97966979).

The spelling of 55551424 in words is "fifty-five million, five hundred fifty-one thousand, four hundred twenty-four".