54997509 has 16 divisors (see below), whose sum is σ = 84869120. Its totient is φ = 31028400.

The previous prime is 54997493. The next prime is 54997513. The reversal of 54997509 is 90579945.

It is not a de Polignac number, because 54997509 - 2⁴ = 54997493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54997589) 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 15 ways as a sum of consecutive naturals, for example, 14917 + ... + 18234.

It is an arithmetic number, because the mean of its divisors is an integer number (5304320).

Almost surely, 2^54997509 is an apocalyptic number.

It is an amenable number.

54997509 is a deficient number, since it is larger than the sum of its proper divisors (29871611).

54997509 is a wasteful number, since it uses less digits than its factorization.

54997509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33240.

The product of its (nonzero) digits is 510300, while the sum is 48.

The square root of 54997509 is about 7416.0305420083. The cubic root of 54997509 is about 380.2895046837.

The spelling of 54997509 in words is "fifty-four million, nine hundred ninety-seven thousand, five hundred nine".