806201551 has 4 divisors (see below), whose sum is σ = 813336192. Its totient is φ = 799066912.

The previous prime is 806201549. The next prime is 806201569. The reversal of 806201551 is 155102608.

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 806201551 - 2¹ = 806201549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806201581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3567151 + ... + 3567376.

It is an arithmetic number, because the mean of its divisors is an integer number (203334048).

Almost surely, 2^806201551 is an apocalyptic number.

806201551 is a deficient number, since it is larger than the sum of its proper divisors (7134641).

806201551 is a wasteful number, since it uses less digits than its factorization.

806201551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7134640.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 806201551 is about 28393.6885768651. The cubic root of 806201551 is about 930.7103491036.

The spelling of 806201551 in words is "eight hundred six million, two hundred one thousand, five hundred fifty-one".