54085517 has 4 divisors (see below), whose sum is σ = 57267036. Its totient is φ = 50904000.

The previous prime is 54085501. The next prime is 54085523. The reversal of 54085517 is 71558045.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44169316 + 9916201 = 6646^2 + 3149^2 .

It is a cyclic number.

It is not a de Polignac number, because 54085517 - 2⁴ = 54085501 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 (54085547) 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, 1590734 + ... + 1590767.

It is an arithmetic number, because the mean of its divisors is an integer number (14316759).

Almost surely, 2^54085517 is an apocalyptic number.

It is an amenable number.

54085517 is a deficient number, since it is larger than the sum of its proper divisors (3181519).

54085517 is a wasteful number, since it uses less digits than its factorization.

54085517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3181518.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 54085517 is about 7354.2856213231. The cubic root of 54085517 is about 378.1757368978.

The spelling of 54085517 in words is "fifty-four million, eighty-five thousand, five hundred seventeen".