54778461 has 16 divisors (see below), whose sum is σ = 74115648. Its totient is φ = 35984000.

The previous prime is 54778447. The next prime is 54778469. The reversal of 54778461 is 16487745.

It is a cyclic number.

It is not a de Polignac number, because 54778461 - 2⁹ = 54777949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54778469) 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, 104881 + ... + 105401.

It is an arithmetic number, because the mean of its divisors is an integer number (4632228).

Almost surely, 2^54778461 is an apocalyptic number.

It is an amenable number.

54778461 is a deficient number, since it is larger than the sum of its proper divisors (19337187).

54778461 is a wasteful number, since it uses less digits than its factorization.

54778461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972.

The product of its digits is 188160, while the sum is 42.

The square root of 54778461 is about 7401.2472597529. The cubic root of 54778461 is about 379.7839515198.

The spelling of 54778461 in words is "fifty-four million, seven hundred seventy-eight thousand, four hundred sixty-one".