54662781 has 4 divisors (see below), whose sum is σ = 72883712. Its totient is φ = 36441852.

The previous prime is 54662779. The next prime is 54662807. The reversal of 54662781 is 18726645.

54662781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 54662781 - 2¹ = 54662779 is a prime.

It is a super-2 number, since 2×54662781² = 5976039253307922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54662711) 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 3 ways as a sum of consecutive naturals, for example, 9110461 + ... + 9110466.

It is an arithmetic number, because the mean of its divisors is an integer number (18220928).

Almost surely, 2^54662781 is an apocalyptic number.

It is an amenable number.

54662781 is a deficient number, since it is larger than the sum of its proper divisors (18220931).

54662781 is a wasteful number, since it uses less digits than its factorization.

54662781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18220930.

The product of its digits is 80640, while the sum is 39.

The square root of 54662781 is about 7393.4282305301. The cubic root of 54662781 is about 379.5164231949.

The spelling of 54662781 in words is "fifty-four million, six hundred sixty-two thousand, seven hundred eighty-one".