51198226 has 4 divisors (see below), whose sum is σ = 76797342. Its totient is φ = 25599112.

The previous prime is 51198221. The next prime is 51198239. The reversal of 51198226 is 62289115.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37515625 + 13682601 = 6125^2 + 3699^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51198191 and 51198200.

It is not an unprimeable number, because it can be changed into a prime (51198221) 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 as a sum of consecutive naturals, namely, 12799555 + ... + 12799558.

Almost surely, 2^51198226 is an apocalyptic number.

51198226 is a deficient number, since it is larger than the sum of its proper divisors (25599116).

51198226 is a wasteful number, since it uses less digits than its factorization.

51198226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25599115.

The product of its digits is 8640, while the sum is 34.

The square root of 51198226 is about 7155.2935649070. The cubic root of 51198226 is about 371.3228180048.

The spelling of 51198226 in words is "fifty-one million, one hundred ninety-eight thousand, two hundred twenty-six".