48942821 has 2 divisors, whose sum is σ = 48942822. Its totient is φ = 48942820.

The previous prime is 48942811. The next prime is 48942833. The reversal of 48942821 is 12824984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46430596 + 2512225 = 6814^2 + 1585^2 .

It is a cyclic number.

It is not a de Polignac number, because 48942821 - 2⁶ = 48942757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48942811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24471410 + 24471411.

It is an arithmetic number, because the mean of its divisors is an integer number (24471411).

Almost surely, 2^48942821 is an apocalyptic number.

It is an amenable number.

48942821 is a deficient number, since it is larger than the sum of its proper divisors (1).

48942821 is an equidigital number, since it uses as much as digits as its factorization.

48942821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 38.

The square root of 48942821 is about 6995.9145935324. The cubic root of 48942821 is about 365.7881785663.

The spelling of 48942821 in words is "forty-eight million, nine hundred forty-two thousand, eight hundred twenty-one".