54440520457 has 2 divisors, whose sum is σ = 54440520458. Its totient is φ = 54440520456.

The previous prime is 54440520439. The next prime is 54440520481. The reversal of 54440520457 is 75402504445.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42411695481 + 12028824976 = 205941^2 + 109676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54440520457 is a prime.

It is not a weakly prime, because it can be changed into another prime (54440520437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27220260228 + 27220260229.

It is an arithmetic number, because the mean of its divisors is an integer number (27220260229).

Almost surely, 2^54440520457 is an apocalyptic number.

It is an amenable number.

54440520457 is a deficient number, since it is larger than the sum of its proper divisors (1).

54440520457 is an equidigital number, since it uses as much as digits as its factorization.

54440520457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448000, while the sum is 40.

The spelling of 54440520457 in words is "fifty-four billion, four hundred forty million, five hundred twenty thousand, four hundred fifty-seven".