54213565 has 16 divisors (see below), whose sum is σ = 74672640. Its totient is φ = 37013760.

The previous prime is 54213539. The next prime is 54213569. The reversal of 54213565 is 56531245.

It is not a de Polignac number, because 54213565 - 2¹¹ = 54211517 is a prime.

It is a super-2 number, since 2×54213565² = 5878221260018450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54213569) 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, 5125 + ... + 11605.

It is an arithmetic number, because the mean of its divisors is an integer number (4667040).

Almost surely, 2^54213565 is an apocalyptic number.

It is an amenable number.

54213565 is a deficient number, since it is larger than the sum of its proper divisors (20459075).

54213565 is a wasteful number, since it uses less digits than its factorization.

54213565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6732.

The product of its digits is 18000, while the sum is 31.

The square root of 54213565 is about 7362.9861469379. The cubic root of 54213565 is about 378.4739466241.

The spelling of 54213565 in words is "fifty-four million, two hundred thirteen thousand, five hundred sixty-five".