54271621 has 2 divisors, whose sum is σ = 54271622. Its totient is φ = 54271620.

The previous prime is 54271589. The next prime is 54271687. The reversal of 54271621 is 12617245.

54271621 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., 50211396 + 4060225 = 7086^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 54271621 - 2⁵ = 54271589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54271621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54271691) 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, 27135810 + 27135811.

It is an arithmetic number, because the mean of its divisors is an integer number (27135811).

Almost surely, 2^54271621 is an apocalyptic number.

It is an amenable number.

54271621 is a deficient number, since it is larger than the sum of its proper divisors (1).

54271621 is an equidigital number, since it uses as much as digits as its factorization.

54271621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 28.

The square root of 54271621 is about 7366.9275142355. The cubic root of 54271621 is about 378.6089979701.

Adding to 54271621 its reverse (12617245), we get a palindrome (66888866).

The spelling of 54271621 in words is "fifty-four million, two hundred seventy-one thousand, six hundred twenty-one".