54561305 has 4 divisors (see below), whose sum is σ = 65473572. Its totient is φ = 43649040.

The previous prime is 54561301. The next prime is 54561307. The reversal of 54561305 is 50316545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50316545 = 5 ⋅10063309.

It can be written as a sum of positive squares in 2 ways, for example, as 8904256 + 45657049 = 2984^2 + 6757^2 .

It is not a de Polignac number, because 54561305 - 2² = 54561301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54561301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5456126 + ... + 5456135.

It is an arithmetic number, because the mean of its divisors is an integer number (16368393).

Almost surely, 2^54561305 is an apocalyptic number.

It is an amenable number.

54561305 is a deficient number, since it is larger than the sum of its proper divisors (10912267).

54561305 is a wasteful number, since it uses less digits than its factorization.

54561305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10912266.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 54561305 is about 7386.5624616597. The cubic root of 54561305 is about 379.2814329293.

It can be divided in two parts, 545 and 61305, that multiplied together give a triangular number (33411225 = T₈₁₇₄).

The spelling of 54561305 in words is "fifty-four million, five hundred sixty-one thousand, three hundred five".