54139290 has 16 divisors (see below), whose sum is σ = 129934368. Its totient is φ = 14437136.

The previous prime is 54139277. The next prime is 54139301. The reversal of 54139290 is 9293145.

54139290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 902292 + ... + 902351.

It is an arithmetic number, because the mean of its divisors is an integer number (8120898).

Almost surely, 2^54139290 is an apocalyptic number.

54139290 is an abundant number, since it is smaller than the sum of its proper divisors (75795078).

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

54139290 is a wasteful number, since it uses less digits than its factorization.

54139290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804653.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 54139290 is about 7357.9406086214. The cubic root of 54139290 is about 378.3010255726.

The spelling of 54139290 in words is "fifty-four million, one hundred thirty-nine thousand, two hundred ninety".