54895021 has 2 divisors, whose sum is σ = 54895022. Its totient is φ = 54895020.

The previous prime is 54895019. The next prime is 54895031. The reversal of 54895021 is 12059845.

54895021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38613796 + 16281225 = 6214^2 + 4035^2 .

It is a cyclic number.

It is not a de Polignac number, because 54895021 - 2¹ = 54895019 is a prime.

Together with 54895019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54895031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27447510 + 27447511.

It is an arithmetic number, because the mean of its divisors is an integer number (27447511).

Almost surely, 2^54895021 is an apocalyptic number.

It is an amenable number.

54895021 is a deficient number, since it is larger than the sum of its proper divisors (1).

54895021 is an equidigital number, since it uses as much as digits as its factorization.

54895021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 54895021 is about 7409.1174238232. The cubic root of 54895021 is about 380.0531343060.

The spelling of 54895021 in words is "fifty-four million, eight hundred ninety-five thousand, twenty-one".