221150504 has 8 divisors (see below), whose sum is σ = 414657210. Its totient is φ = 110575248.

The previous prime is 221150477. The next prime is 221150533. The reversal of 221150504 is 405051122.

It can be written as a sum of positive squares in only one way, i.e., 195160900 + 25989604 = 13970^2 + 5098^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13821899 + ... + 13821914.

Almost surely, 2^221150504 is an apocalyptic number.

It is an amenable number.

221150504 is a deficient number, since it is larger than the sum of its proper divisors (193506706).

221150504 is a wasteful number, since it uses less digits than its factorization.

221150504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27643819 (or 27643815 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 221150504 is about 14871.1298830990. The cubic root of 221150504 is about 604.7315741130.

The spelling of 221150504 in words is "two hundred twenty-one million, one hundred fifty thousand, five hundred four".