54087409 has 2 divisors, whose sum is σ = 54087410. Its totient is φ = 54087408.

The previous prime is 54087391. The next prime is 54087443. The reversal of 54087409 is 90478045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53949025 + 138384 = 7345^2 + 372^2 .

It is a cyclic number.

It is not a de Polignac number, because 54087409 - 2⁹ = 54086897 is a prime.

It is not a weakly prime, because it can be changed into another prime (54087479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27043704 + 27043705.

It is an arithmetic number, because the mean of its divisors is an integer number (27043705).

Almost surely, 2^54087409 is an apocalyptic number.

It is an amenable number.

54087409 is a deficient number, since it is larger than the sum of its proper divisors (1).

54087409 is an equidigital number, since it uses as much as digits as its factorization.

54087409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 54087409 is about 7354.4142526785. The cubic root of 54087409 is about 378.1801465820.

The spelling of 54087409 in words is "fifty-four million, eighty-seven thousand, four hundred nine".