54381409 has 16 divisors (see below), whose sum is σ = 58544640. Its totient is φ = 50400000.

The previous prime is 54381391. The next prime is 54381427. The reversal of 54381409 is 90418345.

It is an interprime number because it is at equal distance from previous prime (54381391) and next prime (54381427).

It is a cyclic number.

It is not a de Polignac number, because 54381409 - 2⁵ = 54381377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54381809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216534 + ... + 216784.

It is an arithmetic number, because the mean of its divisors is an integer number (3659040).

Almost surely, 2^54381409 is an apocalyptic number.

It is an amenable number.

54381409 is a deficient number, since it is larger than the sum of its proper divisors (4163231).

54381409 is a wasteful number, since it uses less digits than its factorization.

54381409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 54381409 is about 7374.3751599712. The cubic root of 54381409 is about 378.8641265648.

The spelling of 54381409 in words is "fifty-four million, three hundred eighty-one thousand, four hundred nine".