201355451 has 4 divisors (see below), whose sum is σ = 219660504. Its totient is φ = 183050400.

The previous prime is 201355433. The next prime is 201355457. The reversal of 201355451 is 154553102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201355451 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 201355451.

It is not an unprimeable number, because it can be changed into a prime (201355457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9152510 + ... + 9152531.

It is an arithmetic number, because the mean of its divisors is an integer number (54915126).

Almost surely, 2^201355451 is an apocalyptic number.

201355451 is a deficient number, since it is larger than the sum of its proper divisors (18305053).

201355451 is a wasteful number, since it uses less digits than its factorization.

201355451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18305052.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 201355451 is about 14189.9771317645. The cubic root of 201355451 is about 586.1216952272.

The spelling of 201355451 in words is "two hundred one million, three hundred fifty-five thousand, four hundred fifty-one".