243554101 has 8 divisors (see below), whose sum is σ = 278510720. Its totient is φ = 208638288.

The previous prime is 243554089. The next prime is 243554119. The reversal of 243554101 is 101455342.

It is a happy number.

243554101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 243554101 - 2⁹ = 243553589 is a prime.

It is a super-2 number, since 2×243554101² = 118637200227836402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243554131) 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, 3895 + ... + 22411.

It is an arithmetic number, because the mean of its divisors is an integer number (34813840).

Almost surely, 2^243554101 is an apocalyptic number.

It is an amenable number.

243554101 is a deficient number, since it is larger than the sum of its proper divisors (34956619).

243554101 is a wasteful number, since it uses less digits than its factorization.

243554101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20403.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 243554101 is about 15606.2199459062. The cubic root of 243554101 is about 624.4990981830.

The spelling of 243554101 in words is "two hundred forty-three million, five hundred fifty-four thousand, one hundred one".