55212141 has 24 divisors (see below), whose sum is σ = 79545024. Its totient is φ = 33946240.

The previous prime is 55212127. The next prime is 55212173. The reversal of 55212141 is 14121255.

It is not a de Polignac number, because 55212141 - 2⁶ = 55212077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55212191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177376 + ... + 177686.

It is an arithmetic number, because the mean of its divisors is an integer number (3314376).

Almost surely, 2^55212141 is an apocalyptic number.

55212141 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

55212141 is a deficient number, since it is larger than the sum of its proper divisors (24332883).

55212141 is a wasteful number, since it uses less digits than its factorization.

55212141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 390 counting only the distinct ones).

The product of its digits is 400, while the sum is 21.

The square root of 55212141 is about 7430.4872653144. The cubic root of 55212141 is about 380.7835655297.

Adding to 55212141 its reverse (14121255), we get a palindrome (69333396).

The spelling of 55212141 in words is "fifty-five million, two hundred twelve thousand, one hundred forty-one".