48199721 has 2 divisors, whose sum is σ = 48199722. Its totient is φ = 48199720.

The previous prime is 48199681. The next prime is 48199741. The reversal of 48199721 is 12799184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43705321 + 4494400 = 6611^2 + 2120^2 .

It is a cyclic number.

It is not a de Polignac number, because 48199721 - 2¹⁰ = 48198697 is a prime.

It is equal to p_2899391 and since 48199721 and 2899391 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 (48199741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24099860 + 24099861.

It is an arithmetic number, because the mean of its divisors is an integer number (24099861).

Almost surely, 2^48199721 is an apocalyptic number.

It is an amenable number.

48199721 is a deficient number, since it is larger than the sum of its proper divisors (1).

48199721 is an equidigital number, since it uses as much as digits as its factorization.

48199721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 41.

The square root of 48199721 is about 6942.6018897817. The cubic root of 48199721 is about 363.9274726689.

The spelling of 48199721 in words is "forty-eight million, one hundred ninety-nine thousand, seven hundred twenty-one".