48690221 has 2 divisors, whose sum is σ = 48690222. Its totient is φ = 48690220.

The previous prime is 48690143. The next prime is 48690259. The reversal of 48690221 is 12209684.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45414121 + 3276100 = 6739^2 + 1810^2 .

It is a cyclic number.

It is not a de Polignac number, because 48690221 - 2¹⁰ = 48689197 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 (48690121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24345110 + 24345111.

It is an arithmetic number, because the mean of its divisors is an integer number (24345111).

Almost surely, 2^48690221 is an apocalyptic number.

It is an amenable number.

48690221 is a deficient number, since it is larger than the sum of its proper divisors (1).

48690221 is an equidigital number, since it uses as much as digits as its factorization.

48690221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 48690221 is about 6977.8378456367. The cubic root of 48690221 is about 365.1578000366.

The spelling of 48690221 in words is "forty-eight million, six hundred ninety thousand, two hundred twenty-one".