54781867 has 16 divisors (see below), whose sum is σ = 66383872. Its totient is φ = 44206560.

The previous prime is 54781849. The next prime is 54781873. The reversal of 54781867 is 76818745.

It is a cyclic number.

It is not a de Polignac number, because 54781867 - 2⁷ = 54781739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54781847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4618 + ... + 11440.

It is an arithmetic number, because the mean of its divisors is an integer number (4148992).

Almost surely, 2^54781867 is an apocalyptic number.

54781867 is a deficient number, since it is larger than the sum of its proper divisors (11602005).

54781867 is a wasteful number, since it uses less digits than its factorization.

54781867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6898.

The product of its digits is 376320, while the sum is 46.

The square root of 54781867 is about 7401.4773525290. The cubic root of 54781867 is about 379.7918227238.

The spelling of 54781867 in words is "fifty-four million, seven hundred eighty-one thousand, eight hundred sixty-seven".