48109021 has 2 divisors, whose sum is σ = 48109022. Its totient is φ = 48109020.

The previous prime is 48108947. The next prime is 48109037. The reversal of 48109021 is 12090184.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46049796 + 2059225 = 6786^2 + 1435^2 .

It is a cyclic number.

It is not a de Polignac number, because 48109021 - 2²¹ = 46011869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48109091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24054510 + 24054511.

It is an arithmetic number, because the mean of its divisors is an integer number (24054511).

Almost surely, 2^48109021 is an apocalyptic number.

It is an amenable number.

48109021 is a deficient number, since it is larger than the sum of its proper divisors (1).

48109021 is an equidigital number, since it uses as much as digits as its factorization.

48109021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 48109021 is about 6936.0666807637. The cubic root of 48109021 is about 363.6990553863.

It can be divided in two parts, 4810 and 9021, that added together give a palindrome (13831).

The spelling of 48109021 in words is "forty-eight million, one hundred nine thousand, twenty-one".