54421432321 has 2 divisors, whose sum is σ = 54421432322. Its totient is φ = 54421432320.

The previous prime is 54421432283. The next prime is 54421432343. The reversal of 54421432321 is 12323412445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51954820096 + 2466612225 = 227936^2 + 49665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54421432321 is a prime.

It is not a weakly prime, because it can be changed into another prime (54421432921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27210716160 + 27210716161.

It is an arithmetic number, because the mean of its divisors is an integer number (27210716161).

Almost surely, 2^54421432321 is an apocalyptic number.

It is an amenable number.

54421432321 is a deficient number, since it is larger than the sum of its proper divisors (1).

54421432321 is an equidigital number, since it uses as much as digits as its factorization.

54421432321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 31.

Adding to 54421432321 its reverse (12323412445), we get a palindrome (66744844766).

The spelling of 54421432321 in words is "fifty-four billion, four hundred twenty-one million, four hundred thirty-two thousand, three hundred twenty-one".