47951851 has 2 divisors, whose sum is σ = 47951852. Its totient is φ = 47951850.

The previous prime is 47951821. The next prime is 47951861. The reversal of 47951851 is 15815974.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47951851 is a prime.

It is not a weakly prime, because it can be changed into another prime (47951821) 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, 23975925 + 23975926.

It is an arithmetic number, because the mean of its divisors is an integer number (23975926).

Almost surely, 2^47951851 is an apocalyptic number.

47951851 is a deficient number, since it is larger than the sum of its proper divisors (1).

47951851 is an equidigital number, since it uses as much as digits as its factorization.

47951851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 40.

The square root of 47951851 is about 6924.7275036640. The cubic root of 47951851 is about 363.3025604964.

The spelling of 47951851 in words is "forty-seven million, nine hundred fifty-one thousand, eight hundred fifty-one".