54719509 has 8 divisors (see below), whose sum is σ = 59070872. Its totient is φ = 50388480.

The previous prime is 54719443. The next prime is 54719519. The reversal of 54719509 is 90591745.

It can be written as a sum of positive squares in 4 ways, for example, as 6027025 + 48692484 = 2455^2 + 6978^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54719509 - 2¹⁵ = 54686741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54719519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769 + ... + 10489.

It is an arithmetic number, because the mean of its divisors is an integer number (7383859).

Almost surely, 2^54719509 is an apocalyptic number.

It is an amenable number.

54719509 is a deficient number, since it is larger than the sum of its proper divisors (4351363).

54719509 is a wasteful number, since it uses less digits than its factorization.

54719509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10167.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 54719509 is about 7397.2636156893. The cubic root of 54719509 is about 379.6476627941.

The spelling of 54719509 in words is "fifty-four million, seven hundred nineteen thousand, five hundred nine".