55471224 has 32 divisors (see below), whose sum is σ = 140353920. Its totient is φ = 18266976.

The previous prime is 55471219. The next prime is 55471259. The reversal of 55471224 is 42217455.

It is a junction number, because it is equal to n+sod(n) for n = 55471191 and 55471200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11932 + ... + 15915.

It is an arithmetic number, because the mean of its divisors is an integer number (4386060).

Almost surely, 2^55471224 is an apocalyptic number.

It is an amenable number.

55471224 is an abundant number, since it is smaller than the sum of its proper divisors (84882696).

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

55471224 is a wasteful number, since it uses less digits than its factorization.

55471224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27939 (or 27935 counting only the distinct ones).

The product of its digits is 11200, while the sum is 30.

The square root of 55471224 is about 7447.9006438056. The cubic root of 55471224 is about 381.3782453446.

Adding to 55471224 its reverse (42217455), we get a palindrome (97688679).

The spelling of 55471224 in words is "fifty-five million, four hundred seventy-one thousand, two hundred twenty-four".