51034221 has 36 divisors (see below), whose sum is σ = 89526112. Its totient is φ = 27437184.

The previous prime is 51034213. The next prime is 51034241. The reversal of 51034221 is 12243015.

51034221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51034221 - 2³ = 51034213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51034194 and 51034203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51034241) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 16806 + ... + 19608.

Almost surely, 2^51034221 is an apocalyptic number.

51034221 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51034221 is a deficient number, since it is larger than the sum of its proper divisors (38491891).

51034221 is a wasteful number, since it uses less digits than its factorization.

51034221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850 (or 2830 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 51034221 is about 7143.8239759949. The cubic root of 51034221 is about 370.9259035940.

Adding to 51034221 its reverse (12243015), we get a palindrome (63277236).

The spelling of 51034221 in words is "fifty-one million, thirty-four thousand, two hundred twenty-one".