54131609 has 4 divisors (see below), whose sum is σ = 61864704. Its totient is φ = 46398516.

The previous prime is 54131599. The next prime is 54131647. The reversal of 54131609 is 90613145.

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 54131609 - 2⁴ = 54131593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54131659) 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 3 ways as a sum of consecutive naturals, for example, 3866537 + ... + 3866550.

It is an arithmetic number, because the mean of its divisors is an integer number (15466176).

Almost surely, 2^54131609 is an apocalyptic number.

It is an amenable number.

54131609 is a deficient number, since it is larger than the sum of its proper divisors (7733095).

54131609 is an equidigital number, since it uses as much as digits as its factorization.

54131609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7733094.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 54131609 is about 7357.4186369949. The cubic root of 54131609 is about 378.2831342678.

The spelling of 54131609 in words is "fifty-four million, one hundred thirty-one thousand, six hundred nine".