54066390 has 32 divisors (see below), whose sum is σ = 148296960. Its totient is φ = 12357984.

The previous prime is 54066379. The next prime is 54066391. The reversal of 54066390 is 9366045.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54066391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128520 + ... + 128939.

It is an arithmetic number, because the mean of its divisors is an integer number (4634280).

Almost surely, 2^54066390 is an apocalyptic number.

54066390 is an abundant number, since it is smaller than the sum of its proper divisors (94230570).

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

54066390 is a wasteful number, since it uses less digits than its factorization.

54066390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257476.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 54066390 is about 7352.9851081041. The cubic root of 54066390 is about 378.1311518249.

The spelling of 54066390 in words is "fifty-four million, sixty-six thousand, three hundred ninety".