54255661 has 2 divisors, whose sum is σ = 54255662. Its totient is φ = 54255660.

The previous prime is 54255647. The next prime is 54255671. The reversal of 54255661 is 16655245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49970761 + 4284900 = 7069^2 + 2070^2 .

It is a cyclic number.

It is not a de Polignac number, because 54255661 - 2¹⁵ = 54222893 is a prime.

It is a super-3 number, since 3×54255661³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54255631) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27127830 + 27127831.

It is an arithmetic number, because the mean of its divisors is an integer number (27127831).

Almost surely, 2^54255661 is an apocalyptic number.

It is an amenable number.

54255661 is a deficient number, since it is larger than the sum of its proper divisors (1).

54255661 is an equidigital number, since it uses as much as digits as its factorization.

54255661 is an evil number, because the sum of its binary digits is even.

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

The square root of 54255661 is about 7365.8442150238. The cubic root of 54255661 is about 378.5718810146.

The spelling of 54255661 in words is "fifty-four million, two hundred fifty-five thousand, six hundred sixty-one".