54046781 has 4 divisors (see below), whose sum is σ = 54345564. Its totient is φ = 53748000.

The previous prime is 54046777. The next prime is 54046787. The reversal of 54046781 is 18764045.

54046781 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.

It can be written as a sum of positive squares in 2 ways, for example, as 14784025 + 39262756 = 3845^2 + 6266^2 .

It is a cyclic number.

It is not a de Polignac number, because 54046781 - 2² = 54046777 is a prime.

It is a super-2 number, since 2×54046781² = 5842109072923922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54046787) 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, 149120 + ... + 149481.

It is an arithmetic number, because the mean of its divisors is an integer number (13586391).

Almost surely, 2^54046781 is an apocalyptic number.

It is an amenable number.

54046781 is a deficient number, since it is larger than the sum of its proper divisors (298783).

54046781 is a wasteful number, since it uses less digits than its factorization.

54046781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298782.

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

The square root of 54046781 is about 7351.6515831478. The cubic root of 54046781 is about 378.0854322916.

The spelling of 54046781 in words is "fifty-four million, forty-six thousand, seven hundred eighty-one".