51653222 has 8 divisors (see below), whose sum is σ = 77847672. Its totient is φ = 25704000.

The previous prime is 51653213. The next prime is 51653227. The reversal of 51653222 is 22235615.

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

It is a junction number, because it is equal to n+sod(n) for n = 51653191 and 51653200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51653227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60779 + ... + 61622.

It is an arithmetic number, because the mean of its divisors is an integer number (9730959).

Almost surely, 2^51653222 is an apocalyptic number.

51653222 is a deficient number, since it is larger than the sum of its proper divisors (26194450).

51653222 is a wasteful number, since it uses less digits than its factorization.

51653222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122614.

The product of its digits is 3600, while the sum is 26.

The square root of 51653222 is about 7187.0176012029. The cubic root of 51653222 is about 372.4195511146.

Adding to 51653222 its reverse (22235615), we get a palindrome (73888837).

The spelling of 51653222 in words is "fifty-one million, six hundred fifty-three thousand, two hundred twenty-two".