51536222 has 8 divisors (see below), whose sum is σ = 77342472. Its totient is φ = 25755400.

The previous prime is 51536213. The next prime is 51536237. The reversal of 51536222 is 22263515.

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 = 51536191 and 51536200.

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, 29 + ... + 10152.

It is an arithmetic number, because the mean of its divisors is an integer number (9667809).

Almost surely, 2^51536222 is an apocalyptic number.

51536222 is a deficient number, since it is larger than the sum of its proper divisors (25806250).

51536222 is a wasteful number, since it uses less digits than its factorization.

51536222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12714.

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

The square root of 51536222 is about 7178.8733099282. The cubic root of 51536222 is about 372.1381486743.

Adding to 51536222 its reverse (22263515), we get a palindrome (73799737).

The spelling of 51536222 in words is "fifty-one million, five hundred thirty-six thousand, two hundred twenty-two".