54631009 has 2 divisors, whose sum is σ = 54631010. Its totient is φ = 54631008.

The previous prime is 54631007. The next prime is 54631039. The reversal of 54631009 is 90013645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52243984 + 2387025 = 7228^2 + 1545^2 .

It is a cyclic number.

It is not a de Polignac number, because 54631009 - 2¹ = 54631007 is a prime.

Together with 54631007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (54631007) 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, 27315504 + 27315505.

It is an arithmetic number, because the mean of its divisors is an integer number (27315505).

Almost surely, 2^54631009 is an apocalyptic number.

It is an amenable number.

54631009 is a deficient number, since it is larger than the sum of its proper divisors (1).

54631009 is an equidigital number, since it uses as much as digits as its factorization.

54631009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 54631009 is about 7391.2792532822. The cubic root of 54631009 is about 379.4428793532.

The spelling of 54631009 in words is "fifty-four million, six hundred thirty-one thousand, nine".