51704222 has 8 divisors (see below), whose sum is σ = 77852016. Its totient is φ = 25753552.

The previous prime is 51704209. The next prime is 51704227. The reversal of 51704222 is 22240715.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51704227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48623 + ... + 49674.

It is an arithmetic number, because the mean of its divisors is an integer number (9731502).

Almost surely, 2^51704222 is an apocalyptic number.

51704222 is a deficient number, since it is larger than the sum of its proper divisors (26147794).

51704222 is a wasteful number, since it uses less digits than its factorization.

51704222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98562.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 51704222 is about 7190.5647900565. The cubic root of 51704222 is about 372.5420807377.

Adding to 51704222 its reverse (22240715), we get a palindrome (73944937).

The spelling of 51704222 in words is "fifty-one million, seven hundred four thousand, two hundred twenty-two".