51766243 has 2 divisors, whose sum is σ = 51766244. Its totient is φ = 51766242.

The previous prime is 51766229. The next prime is 51766283. The reversal of 51766243 is 34266715.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51766243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51766199 and 51766208.

It is not a weakly prime, because it can be changed into another prime (51766283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25883121 + 25883122.

It is an arithmetic number, because the mean of its divisors is an integer number (25883122).

Almost surely, 2^51766243 is an apocalyptic number.

51766243 is a deficient number, since it is larger than the sum of its proper divisors (1).

51766243 is an equidigital number, since it uses as much as digits as its factorization.

51766243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 51766243 is about 7194.8761629371. The cubic root of 51766243 is about 372.6909802476.

The spelling of 51766243 in words is "fifty-one million, seven hundred sixty-six thousand, two hundred forty-three".