55221412 has 12 divisors (see below), whose sum is σ = 97343820. Its totient is φ = 27408896.

The previous prime is 55221407. The next prime is 55221433. The reversal of 55221412 is 21412255.

It can be written as a sum of positive squares in 2 ways, for example, as 36072036 + 19149376 = 6006^2 + 4376^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49837 + ... + 50932.

It is an arithmetic number, because the mean of its divisors is an integer number (8111985).

Almost surely, 2^55221412 is an apocalyptic number.

It is an amenable number.

55221412 is a deficient number, since it is larger than the sum of its proper divisors (42122408).

55221412 is a wasteful number, since it uses less digits than its factorization.

55221412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100910 (or 100908 counting only the distinct ones).

The product of its digits is 800, while the sum is 22.

The square root of 55221412 is about 7431.1110878522. Note that the first 3 decimals coincide. The cubic root of 55221412 is about 380.8048775503.

Adding to 55221412 its reverse (21412255), we get a palindrome (76633667).

The spelling of 55221412 in words is "fifty-five million, two hundred twenty-one thousand, four hundred twelve".