54509659 has 4 divisors (see below), whose sum is σ = 55323304. Its totient is φ = 53696016.

The previous prime is 54509657. The next prime is 54509677. The reversal of 54509659 is 95690545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95690545 = 5 ⋅19138109.

It is a cyclic number.

It is not a de Polignac number, because 54509659 - 2¹ = 54509657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54509657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406722 + ... + 406855.

It is an arithmetic number, because the mean of its divisors is an integer number (13830826).

Almost surely, 2^54509659 is an apocalyptic number.

54509659 is a deficient number, since it is larger than the sum of its proper divisors (813645).

54509659 is an equidigital number, since it uses as much as digits as its factorization.

54509659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813644.

The product of its (nonzero) digits is 243000, while the sum is 43.

The square root of 54509659 is about 7383.0656911611. The cubic root of 54509659 is about 379.1617232272.

The spelling of 54509659 in words is "fifty-four million, five hundred nine thousand, six hundred fifty-nine".