54363521 has 2 divisors, whose sum is σ = 54363522. Its totient is φ = 54363520.

The previous prime is 54363497. The next prime is 54363523. The reversal of 54363521 is 12536345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50922496 + 3441025 = 7136^2 + 1855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54363521 is a prime.

It is a Sophie Germain prime.

Together with 54363523, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (54363523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27181760 + 27181761.

It is an arithmetic number, because the mean of its divisors is an integer number (27181761).

Almost surely, 2^54363521 is an apocalyptic number.

It is an amenable number.

54363521 is a deficient number, since it is larger than the sum of its proper divisors (1).

54363521 is an equidigital number, since it uses as much as digits as its factorization.

54363521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 54363521 is about 7373.1622116972. The cubic root of 54363521 is about 378.8225813331.

Adding to 54363521 its reverse (12536345), we get a palindrome (66899866).

The spelling of 54363521 in words is "fifty-four million, three hundred sixty-three thousand, five hundred twenty-one".