54216431 has 2 divisors, whose sum is σ = 54216432. Its totient is φ = 54216430.

The previous prime is 54216413. The next prime is 54216439. The reversal of 54216431 is 13461245.

Together with previous prime (54216413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54216431 is a prime.

It is a super-2 number, since 2×54216431² = 5878842780755522, which contains 22 as substring.

It is equal to p_3238280 and since 54216431 and 3238280 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54216431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54216439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27108215 + 27108216.

It is an arithmetic number, because the mean of its divisors is an integer number (27108216).

Almost surely, 2^54216431 is an apocalyptic number.

54216431 is a deficient number, since it is larger than the sum of its proper divisors (1).

54216431 is an equidigital number, since it uses as much as digits as its factorization.

54216431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 26.

The square root of 54216431 is about 7363.1807664894. The cubic root of 54216431 is about 378.4806158481.

Adding to 54216431 its reverse (13461245), we get a palindrome (67677676).

The spelling of 54216431 in words is "fifty-four million, two hundred sixteen thousand, four hundred thirty-one".