54521139 has 8 divisors (see below), whose sum is σ = 73615360. Its totient is φ = 35887176.

The previous prime is 54521107. The next prime is 54521143. The reversal of 54521139 is 93112545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54521139 - 2⁵ = 54521107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54521039) 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, 114787 + ... + 115260.

It is an arithmetic number, because the mean of its divisors is an integer number (9201920).

Almost surely, 2^54521139 is an apocalyptic number.

54521139 is a deficient number, since it is larger than the sum of its proper divisors (19094221).

54521139 is a wasteful number, since it uses less digits than its factorization.

54521139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230129.

The product of its digits is 5400, while the sum is 30.

The square root of 54521139 is about 7383.8431050504. The cubic root of 54521139 is about 379.1883391281.

The spelling of 54521139 in words is "fifty-four million, five hundred twenty-one thousand, one hundred thirty-nine".