51222441 has 8 divisors (see below), whose sum is σ = 68818464. Its totient is φ = 33887360.

The previous prime is 51222427. The next prime is 51222463. The reversal of 51222441 is 14422215.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51222441 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51222481) 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, 64776 + ... + 65561.

It is an arithmetic number, because the mean of its divisors is an integer number (8602308).

Almost surely, 2^51222441 is an apocalyptic number.

It is an amenable number.

51222441 is a deficient number, since it is larger than the sum of its proper divisors (17596023).

51222441 is a wasteful number, since it uses less digits than its factorization.

51222441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130471.

The product of its digits is 640, while the sum is 21.

The square root of 51222441 is about 7156.9854687571. The cubic root of 51222441 is about 371.3813497519.

Adding to 51222441 its reverse (14422215), we get a palindrome (65644656).

The spelling of 51222441 in words is "fifty-one million, two hundred twenty-two thousand, four hundred forty-one".