54778398 has 16 divisors (see below), whose sum is σ = 109629696. Its totient is φ = 18247320.

The previous prime is 54778393. The next prime is 54778439. The reversal of 54778398 is 89387745.

It is a self number, because there is not a number n which added to its sum of digits gives 54778398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54778391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14715 + ... + 18057.

It is an arithmetic number, because the mean of its divisors is an integer number (6851856).

Almost surely, 2^54778398 is an apocalyptic number.

54778398 is an abundant number, since it is smaller than the sum of its proper divisors (54851298).

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

54778398 is a wasteful number, since it uses less digits than its factorization.

54778398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6079.

The product of its digits is 1693440, while the sum is 51.

The square root of 54778398 is about 7401.2430037123. The cubic root of 54778398 is about 379.7838059248.

The spelling of 54778398 in words is "fifty-four million, seven hundred seventy-eight thousand, three hundred ninety-eight".