48961021 has 2 divisors, whose sum is σ = 48961022. Its totient is φ = 48961020.

The previous prime is 48961013. The next prime is 48961039. The reversal of 48961021 is 12016984.

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., 31236921 + 17724100 = 5589^2 + 4210^2 .

It is a cyclic number.

It is not a de Polignac number, because 48961021 - 2³ = 48961013 is a prime.

It is a Chen prime.

It is equal to p_2942356 and since 48961021 and 2942356 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48961051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24480510 + 24480511.

It is an arithmetic number, because the mean of its divisors is an integer number (24480511).

Almost surely, 2^48961021 is an apocalyptic number.

It is an amenable number.

48961021 is a deficient number, since it is larger than the sum of its proper divisors (1).

48961021 is an equidigital number, since it uses as much as digits as its factorization.

48961021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 48961021 is about 6997.2152317904. The cubic root of 48961021 is about 365.8335139167.

The spelling of 48961021 in words is "forty-eight million, nine hundred sixty-one thousand, twenty-one".