55222424 has 8 divisors (see below), whose sum is σ = 103542060. Its totient is φ = 27611208.

The previous prime is 55222423. The next prime is 55222459. The reversal of 55222424 is 42422255.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×55222424² = 6099032224871552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55222393 and 55222402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55222421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3451394 + ... + 3451409.

Almost surely, 2^55222424 is an apocalyptic number.

It is an amenable number.

55222424 is a deficient number, since it is larger than the sum of its proper divisors (48319636).

55222424 is a wasteful number, since it uses less digits than its factorization.

55222424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6902809 (or 6902805 counting only the distinct ones).

The product of its digits is 6400, while the sum is 26.

The square root of 55222424 is about 7431.1791796457. The cubic root of 55222424 is about 380.8072037747.

Adding to 55222424 its reverse (42422255), we get a palindrome (97644679).

The spelling of 55222424 in words is "fifty-five million, two hundred twenty-two thousand, four hundred twenty-four".