551000201 has 4 divisors (see below), whose sum is σ = 551054592. Its totient is φ = 550945812.

The previous prime is 551000183. The next prime is 551000239. The reversal of 551000201 is 102000155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 102000155 = 5 ⋅20400031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551000201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551000101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7001 + ... + 33926.

It is an arithmetic number, because the mean of its divisors is an integer number (137763648).

Almost surely, 2^551000201 is an apocalyptic number.

It is an amenable number.

551000201 is a deficient number, since it is larger than the sum of its proper divisors (54391).

551000201 is a wasteful number, since it uses less digits than its factorization.

551000201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54390.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 551000201 is about 23473.3934700546. The cubic root of 551000201 is about 819.8176279930.

Adding to 551000201 its reverse (102000155), we get a palindrome (653000356).

It can be divided in two parts, 55 and 1000201, that multiplied together give a palindrome (55011055).

The spelling of 551000201 in words is "five hundred fifty-one million, two hundred one", and thus it is an aban number.