54158778 has 24 divisors (see below), whose sum is σ = 123520800. Its totient is φ = 17102664.

The previous prime is 54158737. The next prime is 54158803. The reversal of 54158778 is 87785145.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78838 + ... + 79521.

It is an arithmetic number, because the mean of its divisors is an integer number (5146700).

Almost surely, 2^54158778 is an apocalyptic number.

54158778 is an abundant number, since it is smaller than the sum of its proper divisors (69362022).

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

54158778 is a wasteful number, since it uses less digits than its factorization.

54158778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158386 (or 158383 counting only the distinct ones).

The product of its digits is 313600, while the sum is 45.

The square root of 54158778 is about 7359.2647730599. The cubic root of 54158778 is about 378.3464112557.

It can be divided in two parts, 541 and 58778, that added together give a cube (59319 = 39³).

The spelling of 54158778 in words is "fifty-four million, one hundred fifty-eight thousand, seven hundred seventy-eight".