54025021 has 2 divisors, whose sum is σ = 54025022. Its totient is φ = 54025020.

The previous prime is 54025009. The next prime is 54025039. The reversal of 54025021 is 12052045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36132121 + 17892900 = 6011^2 + 4230^2 .

It is a cyclic number.

It is not a de Polignac number, because 54025021 - 2¹¹ = 54022973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54025021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54025421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27012510 + 27012511.

It is an arithmetic number, because the mean of its divisors is an integer number (27012511).

Almost surely, 2^54025021 is an apocalyptic number.

It is an amenable number.

54025021 is a deficient number, since it is larger than the sum of its proper divisors (1).

54025021 is an equidigital number, since it uses as much as digits as its factorization.

54025021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 54025021 is about 7350.1714945979. The cubic root of 54025021 is about 378.0346846293.

Adding to 54025021 its reverse (12052045), we get a palindrome (66077066).

The spelling of 54025021 in words is "fifty-four million, twenty-five thousand, twenty-one".