55222624 has 12 divisors (see below), whose sum is σ = 108719604. Its totient is φ = 27611296.

The previous prime is 55222577. The next prime is 55222627. The reversal of 55222624 is 42622255.

It is a junction number, because it is equal to n+sod(n) for n = 55222592 and 55222601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55222627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 862822 + ... + 862885.

It is an arithmetic number, because the mean of its divisors is an integer number (9059967).

Almost surely, 2^55222624 is an apocalyptic number.

It is an amenable number.

55222624 is a deficient number, since it is larger than the sum of its proper divisors (53496980).

55222624 is a wasteful number, since it uses less digits than its factorization.

55222624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725717 (or 1725709 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 55222624 is about 7431.1926364481. The cubic root of 55222624 is about 380.8076634995.

Adding to 55222624 its reverse (42622255), we get a palindrome (97844879).

The spelling of 55222624 in words is "fifty-five million, two hundred twenty-two thousand, six hundred twenty-four".