51550214 has 4 divisors (see below), whose sum is σ = 77325324. Its totient is φ = 25775106.

The previous prime is 51550207. The next prime is 51550229. The reversal of 51550214 is 41205515.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51550214.

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, 12887552 + ... + 12887555.

It is an arithmetic number, because the mean of its divisors is an integer number (19331331).

Almost surely, 2^51550214 is an apocalyptic number.

51550214 is a deficient number, since it is larger than the sum of its proper divisors (25775110).

51550214 is a wasteful number, since it uses less digits than its factorization.

51550214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25775109.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 51550214 is about 7179.8477699740. The cubic root of 51550214 is about 372.1718239265.

Adding to 51550214 its reverse (41205515), we get a palindrome (92755729).

The spelling of 51550214 in words is "fifty-one million, five hundred fifty thousand, two hundred fourteen".