48831521 has 2 divisors, whose sum is σ = 48831522. Its totient is φ = 48831520.

The previous prime is 48831493. The next prime is 48831529. The reversal of 48831521 is 12513884.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47541025 + 1290496 = 6895^2 + 1136^2 .

It is a cyclic number.

It is not a de Polignac number, because 48831521 - 2¹⁰ = 48830497 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (48831529) 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, 24415760 + 24415761.

It is an arithmetic number, because the mean of its divisors is an integer number (24415761).

Almost surely, 2^48831521 is an apocalyptic number.

It is an amenable number.

48831521 is a deficient number, since it is larger than the sum of its proper divisors (1).

48831521 is an equidigital number, since it uses as much as digits as its factorization.

48831521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 32.

The square root of 48831521 is about 6987.9554234411. The cubic root of 48831521 is about 365.5106906497.

The spelling of 48831521 in words is "forty-eight million, eight hundred thirty-one thousand, five hundred twenty-one".