221554041 has 16 divisors (see below), whose sum is σ = 311351040. Its totient is φ = 139749840.

The previous prime is 221554033. The next prime is 221554087. The reversal of 221554041 is 140455122.

It is not a de Polignac number, because 221554041 - 2³ = 221554033 is a prime.

It is a super-3 number, since 3×221554041³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (221554031) 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, 53346 + ... + 57348.

It is an arithmetic number, because the mean of its divisors is an integer number (19459440).

Almost surely, 2^221554041 is an apocalyptic number.

It is an amenable number.

221554041 is a deficient number, since it is larger than the sum of its proper divisors (89796999).

221554041 is a wasteful number, since it uses less digits than its factorization.

221554041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4996.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 221554041 is about 14884.6914983146. The cubic root of 221554041 is about 605.0991718675.

The spelling of 221554041 in words is "two hundred twenty-one million, five hundred fifty-four thousand, forty-one".