54779920 has 40 divisors (see below), whose sum is σ = 137163096. Its totient is φ = 20226048.

The previous prime is 54779911. The next prime is 54779939. The reversal of 54779920 is 2997745.

It can be written as a sum of positive squares in 4 ways, for example, as 374544 + 54405376 = 612^2 + 7376^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25297 + ... + 27376.

Almost surely, 2^54779920 is an apocalyptic number.

It is an amenable number.

54779920 is an abundant number, since it is smaller than the sum of its proper divisors (82383176).

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

54779920 is a wasteful number, since it uses less digits than its factorization.

54779920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52699 (or 52693 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 54779920 is about 7401.3458235648. The cubic root of 54779920 is about 379.7873232822.

The spelling of 54779920 in words is "fifty-four million, seven hundred seventy-nine thousand, nine hundred twenty".