201216254 has 4 divisors (see below), whose sum is σ = 301824384. Its totient is φ = 100608126.

The previous prime is 201216193. The next prime is 201216271. The reversal of 201216254 is 452612102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50304062 + ... + 50304065.

It is an arithmetic number, because the mean of its divisors is an integer number (75456096).

Almost surely, 2^201216254 is an apocalyptic number.

201216254 is a deficient number, since it is larger than the sum of its proper divisors (100608130).

201216254 is a wasteful number, since it uses less digits than its factorization.

201216254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100608129.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 201216254 is about 14185.0715190301. The cubic root of 201216254 is about 585.9866021391.

Adding to 201216254 its reverse (452612102), we get a palindrome (653828356).

The spelling of 201216254 in words is "two hundred one million, two hundred sixteen thousand, two hundred fifty-four".