51212201 has 8 divisors (see below), whose sum is σ = 54647520. Its totient is φ = 47850912.

The previous prime is 51212197. The next prime is 51212207. The reversal of 51212201 is 10221215.

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

It is a cyclic number.

It is not a de Polignac number, because 51212201 - 2² = 51212197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51212207) 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, 17075 + ... + 19848.

It is an arithmetic number, because the mean of its divisors is an integer number (6830940).

Almost surely, 2^51212201 is an apocalyptic number.

It is an amenable number.

51212201 is a deficient number, since it is larger than the sum of its proper divisors (3435319).

51212201 is a wasteful number, since it uses less digits than its factorization.

51212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37015.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 51212201 is about 7156.2700480069. The cubic root of 51212201 is about 371.3566001929.

Adding to 51212201 its reverse (10221215), we get a palindrome (61433416).

The spelling of 51212201 in words is "fifty-one million, two hundred twelve thousand, two hundred one".