54216513 has 32 divisors (see below), whose sum is σ = 87588480. Its totient is φ = 32944320.

The previous prime is 54216511. The next prime is 54216529. The reversal of 54216513 is 31561245.

54216513 is a `hidden beast` number, since 5 + 4 + 2 + 1 + 651 + 3 = 666.

54216513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54216513 - 2¹ = 54216511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54216511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28203 + ... + 30063.

It is an arithmetic number, because the mean of its divisors is an integer number (2737140).

Almost surely, 2^54216513 is an apocalyptic number.

It is an amenable number.

54216513 is a deficient number, since it is larger than the sum of its proper divisors (33371967).

54216513 is a wasteful number, since it uses less digits than its factorization.

54216513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966 (or 1960 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 54216513 is about 7363.1863347331. The cubic root of 54216513 is about 378.4808066598.

Adding to 54216513 its reverse (31561245), we get a palindrome (85777758).

The spelling of 54216513 in words is "fifty-four million, two hundred sixteen thousand, five hundred thirteen".