51521214 has 8 divisors (see below), whose sum is σ = 103042440. Its totient is φ = 17173736.

The previous prime is 51521209. The next prime is 51521263. The reversal of 51521214 is 41212515.

51521214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

51521214 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4293429 + ... + 4293440.

It is an arithmetic number, because the mean of its divisors is an integer number (12880305).

Almost surely, 2^51521214 is an apocalyptic number.

51521214 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51521214 is a wasteful number, since it uses less digits than its factorization.

51521214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8586874.

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

The square root of 51521214 is about 7177.8279444411. The cubic root of 51521214 is about 372.1020213878.

Adding to 51521214 its reverse (41212515), we get a palindrome (92733729).

The spelling of 51521214 in words is "fifty-one million, five hundred twenty-one thousand, two hundred fourteen".