54613509 has 16 divisors (see below), whose sum is σ = 74393088. Its totient is φ = 35628912.

The previous prime is 54613501. The next prime is 54613511. The reversal of 54613509 is 90531645.

It is a happy number.

It is not a de Polignac number, because 54613509 - 2³ = 54613501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54613509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54613501) 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, 32754 + ... + 34380.

It is an arithmetic number, because the mean of its divisors is an integer number (4649568).

Almost surely, 2^54613509 is an apocalyptic number.

It is an amenable number.

54613509 is a deficient number, since it is larger than the sum of its proper divisors (19779579).

54613509 is a wasteful number, since it uses less digits than its factorization.

54613509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 54613509 is about 7390.0953309142. The cubic root of 54613509 is about 379.4023592673.

The spelling of 54613509 in words is "fifty-four million, six hundred thirteen thousand, five hundred nine".