201093551 has 4 divisors (see below), whose sum is σ = 202297872. Its totient is φ = 199889232.

The previous prime is 201093521. The next prime is 201093583. The reversal of 201093551 is 155390102.

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

It is a cyclic number.

It is not a de Polignac number, because 201093551 - 2²² = 196899247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201093551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201093521) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 601910 + ... + 602243.

It is an arithmetic number, because the mean of its divisors is an integer number (50574468).

Almost surely, 2^201093551 is an apocalyptic number.

201093551 is a deficient number, since it is larger than the sum of its proper divisors (1204321).

201093551 is a wasteful number, since it uses less digits than its factorization.

201093551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204320.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 201093551 is about 14180.7457843373. The cubic root of 201093551 is about 585.8674650862.

The spelling of 201093551 in words is "two hundred one million, ninety-three thousand, five hundred fifty-one".