54275420621 has 2 divisors, whose sum is σ = 54275420622. Its totient is φ = 54275420620.

The previous prime is 54275420611. The next prime is 54275420783. The reversal of 54275420621 is 12602457245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51422365225 + 2853055396 = 226765^2 + 53414^2 .

It is a cyclic number.

It is not a de Polignac number, because 54275420621 - 2⁶ = 54275420557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54275420611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27137710310 + 27137710311.

It is an arithmetic number, because the mean of its divisors is an integer number (27137710311).

Almost surely, 2^54275420621 is an apocalyptic number.

It is an amenable number.

54275420621 is a deficient number, since it is larger than the sum of its proper divisors (1).

54275420621 is an equidigital number, since it uses as much as digits as its factorization.

54275420621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 38.

Adding to 54275420621 its reverse (12602457245), we get a palindrome (66877877866).

The spelling of 54275420621 in words is "fifty-four billion, two hundred seventy-five million, four hundred twenty thousand, six hundred twenty-one".