54561257 has 2 divisors, whose sum is σ = 54561258. Its totient is φ = 54561256.

The previous prime is 54561233. The next prime is 54561277. The reversal of 54561257 is 75216545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29800681 + 24760576 = 5459^2 + 4976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54561257 is a prime.

It is not a weakly prime, because it can be changed into another prime (54561277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27280628 + 27280629.

It is an arithmetic number, because the mean of its divisors is an integer number (27280629).

Almost surely, 2^54561257 is an apocalyptic number.

It is an amenable number.

54561257 is a deficient number, since it is larger than the sum of its proper divisors (1).

54561257 is an equidigital number, since it uses as much as digits as its factorization.

54561257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42000, while the sum is 35.

The square root of 54561257 is about 7386.5592125157. The cubic root of 54561257 is about 379.2813217057.

The spelling of 54561257 in words is "fifty-four million, five hundred sixty-one thousand, two hundred fifty-seven".