51055306 has 4 divisors (see below), whose sum is σ = 76582962. Its totient is φ = 25527652.

The previous prime is 51055259. The next prime is 51055309. The reversal of 51055306 is 60355015.

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., 49070025 + 1985281 = 7005^2 + 1409^2 .

It is not an unprimeable number, because it can be changed into a prime (51055309) 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, 12763825 + ... + 12763828.

Almost surely, 2^51055306 is an apocalyptic number.

51055306 is a deficient number, since it is larger than the sum of its proper divisors (25527656).

51055306 is a wasteful number, since it uses less digits than its factorization.

51055306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25527655.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 51055306 is about 7145.2995738457. The cubic root of 51055306 is about 370.9769797522.

The spelling of 51055306 in words is "fifty-one million, fifty-five thousand, three hundred six".