54841921 has 2 divisors, whose sum is σ = 54841922. Its totient is φ = 54841920.

The previous prime is 54841901. The next prime is 54841937. The reversal of 54841921 is 12914845.

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., 45751696 + 9090225 = 6764^2 + 3015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54841921 is a prime.

It is not a weakly prime, because it can be changed into another prime (54841901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27420960 + 27420961.

It is an arithmetic number, because the mean of its divisors is an integer number (27420961).

Almost surely, 2^54841921 is an apocalyptic number.

It is an amenable number.

54841921 is a deficient number, since it is larger than the sum of its proper divisors (1).

54841921 is an equidigital number, since it uses as much as digits as its factorization.

54841921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 34.

The square root of 54841921 is about 7405.5331340829. The cubic root of 54841921 is about 379.9305528676.

The spelling of 54841921 in words is "fifty-four million, eight hundred forty-one thousand, nine hundred twenty-one".