54479509 has 16 divisors (see below), whose sum is σ = 66918528. Its totient is φ = 43287552.

The previous prime is 54479497. The next prime is 54479519. The reversal of 54479509 is 90597445.

It is a happy number.

It is not a de Polignac number, because 54479509 - 2¹¹ = 54477461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54479519) 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, 4557 + ... + 11389.

It is an arithmetic number, because the mean of its divisors is an integer number (4182408).

Almost surely, 2^54479509 is an apocalyptic number.

It is an amenable number.

54479509 is a deficient number, since it is larger than the sum of its proper divisors (12439019).

54479509 is a wasteful number, since it uses less digits than its factorization.

54479509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6924.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 54479509 is about 7381.0235740038. The cubic root of 54479509 is about 379.0918039108.

The spelling of 54479509 in words is "fifty-four million, four hundred seventy-nine thousand, five hundred nine".