55621214 has 16 divisors (see below), whose sum is σ = 92171520. Its totient is φ = 24961560.

The previous prime is 55621211. The next prime is 55621259. The reversal of 55621214 is 41212655.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55621211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14264 + ... + 17739.

It is an arithmetic number, because the mean of its divisors is an integer number (5760720).

Almost surely, 2^55621214 is an apocalyptic number.

55621214 is a deficient number, since it is larger than the sum of its proper divisors (36550306).

55621214 is a wasteful number, since it uses less digits than its factorization.

55621214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32095.

The product of its digits is 2400, while the sum is 26.

The square root of 55621214 is about 7457.9631267525. The cubic root of 55621214 is about 381.7216753175.

Adding to 55621214 its reverse (41212655), we get a palindrome (96833869).

It can be divided in two parts, 5562 and 1214, that added together give a palindrome (6776).

The spelling of 55621214 in words is "fifty-five million, six hundred twenty-one thousand, two hundred fourteen".