51662222 has 8 divisors (see below), whose sum is σ = 77597976. Its totient is φ = 25796232.

The previous prime is 51662183. The next prime is 51662231. The reversal of 51662222 is 22226615.

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 = 51662191 and 51662200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15548 + ... + 18575.

It is an arithmetic number, because the mean of its divisors is an integer number (9699747).

Almost surely, 2^51662222 is an apocalyptic number.

51662222 is a deficient number, since it is larger than the sum of its proper divisors (25935754).

51662222 is a wasteful number, since it uses less digits than its factorization.

51662222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34882.

The product of its digits is 2880, while the sum is 26.

The square root of 51662222 is about 7187.6437029113. The cubic root of 51662222 is about 372.4411798480.

Adding to 51662222 its reverse (22226615), we get a palindrome (73888837).

The spelling of 51662222 in words is "fifty-one million, six hundred sixty-two thousand, two hundred twenty-two".