48261221 has 2 divisors, whose sum is σ = 48261222. Its totient is φ = 48261220.

The previous prime is 48261193. The next prime is 48261251. The reversal of 48261221 is 12216284.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40780996 + 7480225 = 6386^2 + 2735^2 .

It is a cyclic number.

It is not a de Polignac number, because 48261221 - 2¹⁴ = 48244837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48261251) 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, 24130610 + 24130611.

It is an arithmetic number, because the mean of its divisors is an integer number (24130611).

Almost surely, 2^48261221 is an apocalyptic number.

It is an amenable number.

48261221 is a deficient number, since it is larger than the sum of its proper divisors (1).

48261221 is an equidigital number, since it uses as much as digits as its factorization.

48261221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 26.

The square root of 48261221 is about 6947.0296530244. The cubic root of 48261221 is about 364.0821902114.

The spelling of 48261221 in words is "forty-eight million, two hundred sixty-one thousand, two hundred twenty-one".