54262781 has 2 divisors, whose sum is σ = 54262782. Its totient is φ = 54262780.

The previous prime is 54262771. The next prime is 54262783. The reversal of 54262781 is 18726245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50537881 + 3724900 = 7109^2 + 1930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54262781 is a prime.

It is a super-2 number, since 2×54262781² = 5888898803707922, which contains 22 as substring.

Together with 54262783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54262783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27131390 + 27131391.

It is an arithmetic number, because the mean of its divisors is an integer number (27131391).

Almost surely, 2^54262781 is an apocalyptic number.

It is an amenable number.

54262781 is a deficient number, since it is larger than the sum of its proper divisors (1).

54262781 is an equidigital number, since it uses as much as digits as its factorization.

54262781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 35.

The square root of 54262781 is about 7366.3275110465. The cubic root of 54262781 is about 378.5884403551.

The spelling of 54262781 in words is "fifty-four million, two hundred sixty-two thousand, seven hundred eighty-one".