54928421 has 2 divisors, whose sum is σ = 54928422. Its totient is φ = 54928420.

The previous prime is 54928381. The next prime is 54928483. The reversal of 54928421 is 12482945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42432196 + 12496225 = 6514^2 + 3535^2 .

It is a cyclic number.

It is not a de Polignac number, because 54928421 - 2¹⁴ = 54912037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54928021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27464210 + 27464211.

It is an arithmetic number, because the mean of its divisors is an integer number (27464211).

Almost surely, 2^54928421 is an apocalyptic number.

It is an amenable number.

54928421 is a deficient number, since it is larger than the sum of its proper divisors (1).

54928421 is an equidigital number, since it uses as much as digits as its factorization.

54928421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 35.

The square root of 54928421 is about 7411.3710607417. The cubic root of 54928421 is about 380.1301977681.

The spelling of 54928421 in words is "fifty-four million, nine hundred twenty-eight thousand, four hundred twenty-one".