55212424 has 16 divisors (see below), whose sum is σ = 104474700. Its totient is φ = 27352512.

The previous prime is 55212401. The next prime is 55212427. The reversal of 55212424 is 42421255.

It can be written as a sum of positive squares in 2 ways, for example, as 53728900 + 1483524 = 7330^2 + 1218^2 .

It is not an unprimeable number, because it can be changed into a prime (55212427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30787 + ... + 32530.

Almost surely, 2^55212424 is an apocalyptic number.

It is an amenable number.

55212424 is a deficient number, since it is larger than the sum of its proper divisors (49262276).

55212424 is a wasteful number, since it uses less digits than its factorization.

55212424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63432 (or 63428 counting only the distinct ones).

The product of its digits is 3200, while the sum is 25.

The square root of 55212424 is about 7430.5063084557. The cubic root of 55212424 is about 380.7842161207.

Adding to 55212424 its reverse (42421255), we get a palindrome (97633679).

The spelling of 55212424 in words is "fifty-five million, two hundred twelve thousand, four hundred twenty-four".