51366298 has 4 divisors (see below), whose sum is σ = 77049450. Its totient is φ = 25683148.

The previous prime is 51366281. The next prime is 51366379. The reversal of 51366298 is 89266315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89266315 = 5 ⋅17853263.

It can be written as a sum of positive squares in only one way, i.e., 46335249 + 5031049 = 6807^2 + 2243^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 51366298.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12841573 + ... + 12841576.

Almost surely, 2^51366298 is an apocalyptic number.

51366298 is a deficient number, since it is larger than the sum of its proper divisors (25683152).

51366298 is a wasteful number, since it uses less digits than its factorization.

51366298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25683151.

The product of its digits is 77760, while the sum is 40.

The square root of 51366298 is about 7167.0285334998. The cubic root of 51366298 is about 371.7286966611.

The spelling of 51366298 in words is "fifty-one million, three hundred sixty-six thousand, two hundred ninety-eight".