51386306 has 16 divisors (see below), whose sum is σ = 78876600. Its totient is φ = 25100928.

The previous prime is 51386299. The next prime is 51386311. The reversal of 51386306 is 60368315.

It can be written as a sum of positive squares in 4 ways, for example, as 45010681 + 6375625 = 6709^2 + 2525^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14300 + ... + 17528.

Almost surely, 2^51386306 is an apocalyptic number.

51386306 is a deficient number, since it is larger than the sum of its proper divisors (27490294).

51386306 is a wasteful number, since it uses less digits than its factorization.

51386306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 51386306 is about 7168.4242340978. The cubic root of 51386306 is about 371.7769551663.

Subtracting 51386306 from its reverse (60368315), we obtain a square (8982009 = 2997²).

The spelling of 51386306 in words is "fifty-one million, three hundred eighty-six thousand, three hundred six".