55424212 has 6 divisors (see below), whose sum is σ = 96992378. Its totient is φ = 27712104.

The previous prime is 55424207. The next prime is 55424219. The reversal of 55424212 is 21242455.

It can be written as a sum of positive squares in only one way, i.e., 36796356 + 18627856 = 6066^2 + 4316^2 .

It is a super-4 number, since 4×55424212⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55424219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6928023 + ... + 6928030.

Almost surely, 2^55424212 is an apocalyptic number.

It is an amenable number.

55424212 is a deficient number, since it is larger than the sum of its proper divisors (41568166).

55424212 is a wasteful number, since it uses less digits than its factorization.

55424212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13856057 (or 13856055 counting only the distinct ones).

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

The square root of 55424212 is about 7444.7439176912. The cubic root of 55424212 is about 381.2704752239.

Adding to 55424212 its reverse (21242455), we get a palindrome (76666667).

The spelling of 55424212 in words is "fifty-five million, four hundred twenty-four thousand, two hundred twelve".