51673313 has 2 divisors, whose sum is σ = 51673314. Its totient is φ = 51673312.

The previous prime is 51673309. The next prime is 51673327. The reversal of 51673313 is 31337615.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31888609 + 19784704 = 5647^2 + 4448^2 .

It is a cyclic number.

It is not a de Polignac number, because 51673313 - 2² = 51673309 is a prime.

It is not a weakly prime, because it can be changed into another prime (51673213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25836656 + 25836657.

It is an arithmetic number, because the mean of its divisors is an integer number (25836657).

Almost surely, 2^51673313 is an apocalyptic number.

It is an amenable number.

51673313 is a deficient number, since it is larger than the sum of its proper divisors (1).

51673313 is an equidigital number, since it uses as much as digits as its factorization.

51673313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 29.

The square root of 51673313 is about 7188.4151939075. The cubic root of 51673313 is about 372.4678302023.

The spelling of 51673313 in words is "fifty-one million, six hundred seventy-three thousand, three hundred thirteen".