54320511 has 16 divisors (see below), whose sum is σ = 82936064. Its totient is φ = 30979584.

The previous prime is 54320501. The next prime is 54320521. The reversal of 54320511 is 11502345.

It is an interprime number because it is at equal distance from previous prime (54320501) and next prime (54320521).

It is not a de Polignac number, because 54320511 - 2¹⁷ = 54189439 is a prime.

It is a super-2 number, since 2×54320511² = 5901435830602242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54320501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9876 + ... + 14358.

It is an arithmetic number, because the mean of its divisors is an integer number (5183504).

Almost surely, 2^54320511 is an apocalyptic number.

54320511 is a deficient number, since it is larger than the sum of its proper divisors (28615553).

54320511 is a wasteful number, since it uses less digits than its factorization.

54320511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5070.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 54320511 is about 7370.2449755758. The cubic root of 54320511 is about 378.7226524493.

Adding to 54320511 its reverse (11502345), we get a palindrome (65822856).

The spelling of 54320511 in words is "fifty-four million, three hundred twenty thousand, five hundred eleven".