54297409 has 4 divisors (see below), whose sum is σ = 54394416. Its totient is φ = 54200404.

The previous prime is 54297391. The next prime is 54297413. The reversal of 54297409 is 90479245.

54297409 = T₆₀₁₅ + T₆₀₁₆ + T₆₀₁₇.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54297409 - 2⁹ = 54296897 is a prime.

It is a super-2 number, since 2×54297409² = 5896417248226562, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54297469) 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 in 3 ways as a sum of consecutive naturals, for example, 47659 + ... + 48784.

It is an arithmetic number, because the mean of its divisors is an integer number (13598604).

Almost surely, 2^54297409 is an apocalyptic number.

54297409 is the 6017-th centered triangular number.

It is an amenable number.

54297409 is a deficient number, since it is larger than the sum of its proper divisors (97007).

54297409 is an equidigital number, since it uses as much as digits as its factorization.

54297409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97006.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 54297409 is about 7368.6775611367. The cubic root of 54297409 is about 378.6689557813.

The spelling of 54297409 in words is "fifty-four million, two hundred ninety-seven thousand, four hundred nine".