47808251 has 2 divisors, whose sum is σ = 47808252. Its totient is φ = 47808250.

The previous prime is 47808239. The next prime is 47808263. The reversal of 47808251 is 15280874.

It is a balanced prime because it is at equal distance from previous prime (47808239) and next prime (47808263).

It is a cyclic number.

It is not a de Polignac number, because 47808251 - 2¹⁴ = 47791867 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_2877317 and since 47808251 and 2877317 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (47808281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23904125 + 23904126.

It is an arithmetic number, because the mean of its divisors is an integer number (23904126).

Almost surely, 2^47808251 is an apocalyptic number.

47808251 is a deficient number, since it is larger than the sum of its proper divisors (1).

47808251 is an equidigital number, since it uses as much as digits as its factorization.

47808251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 47808251 is about 6914.3510903049. The cubic root of 47808251 is about 362.9395407103.

It can be divided in two parts, 4780 and 8251, that added together give a palindrome (13031).

The spelling of 47808251 in words is "forty-seven million, eight hundred eight thousand, two hundred fifty-one".