20253347 has 2 divisors, whose sum is σ = 20253348. Its totient is φ = 20253346.

The previous prime is 20253241. The next prime is 20253353. The reversal of 20253347 is 74335202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20253347 - 2⁸ = 20253091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20253377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10126673 + 10126674.

It is an arithmetic number, because the mean of its divisors is an integer number (10126674).

Almost surely, 2^20253347 is an apocalyptic number.

20253347 is a deficient number, since it is larger than the sum of its proper divisors (1).

20253347 is an equidigital number, since it uses as much as digits as its factorization.

20253347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 20253347 is about 4500.3718735233. The cubic root of 20253347 is about 272.5831051411.

Adding to 20253347 its reverse (74335202), we get a palindrome (94588549).

The spelling of 20253347 in words is "twenty million, two hundred fifty-three thousand, three hundred forty-seven".