54320985 has 12 divisors (see below), whose sum is σ = 94156452. Its totient is φ = 28971168.

The previous prime is 54320983. The next prime is 54320993. The reversal of 54320985 is 58902345.

54320985 is a `hidden beast` number, since 543 + 20 + 98 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31539456 + 22781529 = 5616^2 + 4773^2 .

It is not a de Polignac number, because 54320985 - 2¹ = 54320983 is a prime.

It is a super-2 number, since 2×54320985² = 5901538822740450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54320983) 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 11 ways as a sum of consecutive naturals, for example, 603522 + ... + 603611.

It is an arithmetic number, because the mean of its divisors is an integer number (7846371).

Almost surely, 2^54320985 is an apocalyptic number.

It is an amenable number.

54320985 is a deficient number, since it is larger than the sum of its proper divisors (39835467).

54320985 is a wasteful number, since it uses less digits than its factorization.

54320985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207144 (or 1207141 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 54320985 is about 7370.2771318316. The cubic root of 54320985 is about 378.7237540222.

It can be divided in two parts, 543 and 20985, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 54320985 in words is "fifty-four million, three hundred twenty thousand, nine hundred eighty-five".