54251063521 has 2 divisors, whose sum is σ = 54251063522. Its totient is φ = 54251063520.

The previous prime is 54251063507. The next prime is 54251063549. The reversal of 54251063521 is 12536015245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54233094400 + 17969121 = 232880^2 + 4239^2 .

It is a cyclic number.

It is not a de Polignac number, because 54251063521 - 2¹³ = 54251055329 is a prime.

It is not a weakly prime, because it can be changed into another prime (54251063621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27125531760 + 27125531761.

It is an arithmetic number, because the mean of its divisors is an integer number (27125531761).

Almost surely, 2^54251063521 is an apocalyptic number.

It is an amenable number.

54251063521 is a deficient number, since it is larger than the sum of its proper divisors (1).

54251063521 is an equidigital number, since it uses as much as digits as its factorization.

54251063521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 54251063521 its reverse (12536015245), we get a palindrome (66787078766).

The spelling of 54251063521 in words is "fifty-four billion, two hundred fifty-one million, sixty-three thousand, five hundred twenty-one".