54520645 has 4 divisors (see below), whose sum is σ = 65424780. Its totient is φ = 43616512.

The previous prime is 54520643. The next prime is 54520663. The reversal of 54520645 is 54602545.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13535041 + 40985604 = 3679^2 + 6402^2 .

It is a cyclic number.

It is not a de Polignac number, because 54520645 - 2¹ = 54520643 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54520643) 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 in 3 ways as a sum of consecutive naturals, for example, 5452060 + ... + 5452069.

It is an arithmetic number, because the mean of its divisors is an integer number (16356195).

Almost surely, 2^54520645 is an apocalyptic number.

It is an amenable number.

54520645 is a deficient number, since it is larger than the sum of its proper divisors (10904135).

54520645 is a wasteful number, since it uses less digits than its factorization.

54520645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10904134.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 54520645 is about 7383.8096535596. The cubic root of 54520645 is about 379.1871938866.

The spelling of 54520645 in words is "fifty-four million, five hundred twenty thousand, six hundred forty-five".