551136601 has 4 divisors (see below), whose sum is σ = 551200000. Its totient is φ = 551073204.

The previous prime is 551136589. The next prime is 551136613. The reversal of 551136601 is 106631155.

551136601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 106631155 = 5 ⋅21326231.

It is an interprime number because it is at equal distance from previous prime (551136589) and next prime (551136613).

It is a cyclic number.

It is not a de Polignac number, because 551136601 - 2²³ = 542747993 is a prime.

It is a pancake number, because a pancake can be divided into 551136601 parts by 33200 straight cuts.

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 551136601.

It is not an unprimeable number, because it can be changed into a prime (551136661) 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, 16101 + ... + 36898.

It is an arithmetic number, because the mean of its divisors is an integer number (137800000).

Almost surely, 2^551136601 is an apocalyptic number.

It is an amenable number.

551136601 is a deficient number, since it is larger than the sum of its proper divisors (63399).

551136601 is a wasteful number, since it uses less digits than its factorization.

551136601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63398.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 551136601 is about 23476.2987074198. The cubic root of 551136601 is about 819.8852709801.

Adding to 551136601 its reverse (106631155), we get a palindrome (657767756).

The spelling of 551136601 in words is "five hundred fifty-one million, one hundred thirty-six thousand, six hundred one".