51400226 has 4 divisors (see below), whose sum is σ = 77100342. Its totient is φ = 25700112.

The previous prime is 51400177. The next prime is 51400229. The reversal of 51400226 is 62200415.

It is a happy number.

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., 51337225 + 63001 = 7165^2 + 251^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51400198 and 51400207.

It is not an unprimeable number, because it can be changed into a prime (51400229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12850055 + ... + 12850058.

Almost surely, 2^51400226 is an apocalyptic number.

51400226 is a deficient number, since it is larger than the sum of its proper divisors (25700116).

51400226 is a wasteful number, since it uses less digits than its factorization.

51400226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25700115.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 51400226 is about 7169.3950930326. The cubic root of 51400226 is about 371.8105222675.

The spelling of 51400226 in words is "fifty-one million, four hundred thousand, two hundred twenty-six".