201553398 has 12 divisors (see below), whose sum is σ = 436699068. Its totient is φ = 67184460.

The previous prime is 201553397. The next prime is 201553403. The reversal of 201553398 is 893355102.

201553398 is a `hidden beast` number, since 20 + 15 + 533 + 98 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201553397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5598688 + ... + 5598723.

It is an arithmetic number, because the mean of its divisors is an integer number (36391589).

Almost surely, 2^201553398 is an apocalyptic number.

201553398 is an abundant number, since it is smaller than the sum of its proper divisors (235145670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201553398 is a wasteful number, since it uses less digits than its factorization.

201553398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11197419 (or 11197416 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 201553398 is about 14196.9503063158. The cubic root of 201553398 is about 586.3136990234.

The spelling of 201553398 in words is "two hundred one million, five hundred fifty-three thousand, three hundred ninety-eight".