51648299 has 2 divisors, whose sum is σ = 51648300. Its totient is φ = 51648298.

The previous prime is 51648241. The next prime is 51648301. The reversal of 51648299 is 99284615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51648299 - 2¹⁶ = 51582763 is a prime.

Together with 51648301, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51648209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25824149 + 25824150.

It is an arithmetic number, because the mean of its divisors is an integer number (25824150).

Almost surely, 2^51648299 is an apocalyptic number.

51648299 is a deficient number, since it is larger than the sum of its proper divisors (1).

51648299 is an equidigital number, since it uses as much as digits as its factorization.

51648299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 44.

The square root of 51648299 is about 7186.6751004898. The cubic root of 51648299 is about 372.4077191344.

The spelling of 51648299 in words is "fifty-one million, six hundred forty-eight thousand, two hundred ninety-nine".