221130539 has 8 divisors (see below), whose sum is σ = 261435360. Its totient is φ = 183004416.

The previous prime is 221130523. The next prime is 221130583. The reversal of 221130539 is 935031122.

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

It is not a de Polignac number, because 221130539 - 2⁴ = 221130523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221130739) 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, 544454 + ... + 544859.

It is an arithmetic number, because the mean of its divisors is an integer number (32679420).

Almost surely, 2^221130539 is an apocalyptic number.

221130539 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

221130539 is a deficient number, since it is larger than the sum of its proper divisors (40304821).

221130539 is a wasteful number, since it uses less digits than its factorization.

221130539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089349.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 221130539 is about 14870.4586008637. The cubic root of 221130539 is about 604.7133756026.

The spelling of 221130539 in words is "two hundred twenty-one million, one hundred thirty thousand, five hundred thirty-nine".