55312214 has 4 divisors (see below), whose sum is σ = 82968324. Its totient is φ = 27656106.

The previous prime is 55312189. The next prime is 55312267. The reversal of 55312214 is 41221355.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 55312214.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13828052 + ... + 13828055.

It is an arithmetic number, because the mean of its divisors is an integer number (20742081).

Almost surely, 2^55312214 is an apocalyptic number.

55312214 is a deficient number, since it is larger than the sum of its proper divisors (27656110).

55312214 is a wasteful number, since it uses less digits than its factorization.

55312214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27656109.

The product of its digits is 1200, while the sum is 23.

The square root of 55312214 is about 7437.2181627272. The cubic root of 55312214 is about 381.0134856978.

Adding to 55312214 its reverse (41221355), we get a palindrome (96533569).

The spelling of 55312214 in words is "fifty-five million, three hundred twelve thousand, two hundred fourteen".