54649878 has 16 divisors (see below), whose sum is σ = 110161920. Its totient is φ = 18072936.

The previous prime is 54649877. The next prime is 54649901. The reversal of 54649878 is 87894645.

It is a self number, because there is not a number n which added to its sum of digits gives 54649878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54649877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35098 + ... + 36621.

It is an arithmetic number, because the mean of its divisors is an integer number (6885120).

Almost surely, 2^54649878 is an apocalyptic number.

54649878 is an abundant number, since it is smaller than the sum of its proper divisors (55512042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54649878 is a wasteful number, since it uses less digits than its factorization.

54649878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71851.

The product of its digits is 1935360, while the sum is 51.

The square root of 54649878 is about 7392.5555797708. Note that the first 4 decimals coincide. The cubic root of 54649878 is about 379.4865595737.

The spelling of 54649878 in words is "fifty-four million, six hundred forty-nine thousand, eight hundred seventy-eight".