54645517 has 4 divisors (see below), whose sum is σ = 55176160. Its totient is φ = 54114876.

The previous prime is 54645509. The next prime is 54645527. The reversal of 54645517 is 71554645.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54645517 - 2³ = 54645509 is a prime.

It is a super-2 number, since 2×54645517² = 5972265056394578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54645527) 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, 265167 + ... + 265372.

It is an arithmetic number, because the mean of its divisors is an integer number (13794040).

Almost surely, 2^54645517 is an apocalyptic number.

It is an amenable number.

54645517 is a deficient number, since it is larger than the sum of its proper divisors (530643).

54645517 is a wasteful number, since it uses less digits than its factorization.

54645517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530642.

The product of its digits is 84000, while the sum is 37.

The square root of 54645517 is about 7392.2606149946. The cubic root of 54645517 is about 379.4764651022.

The spelling of 54645517 in words is "fifty-four million, six hundred forty-five thousand, five hundred seventeen".