551115001 has 2 divisors, whose sum is σ = 551115002. Its totient is φ = 551115000.

The previous prime is 551114987. The next prime is 551115017. The reversal of 551115001 is 100511155.

It is a happy number.

551115001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 482241600 + 68873401 = 21960^2 + 8299^2 .

It is a cyclic number.

It is not a de Polignac number, because 551115001 - 2⁷ = 551114873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551115001.

It is not a weakly prime, because it can be changed into another prime (551115031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275557500 + 275557501.

It is an arithmetic number, because the mean of its divisors is an integer number (275557501).

Almost surely, 2^551115001 is an apocalyptic number.

It is an amenable number.

551115001 is a deficient number, since it is larger than the sum of its proper divisors (1).

551115001 is an equidigital number, since it uses as much as digits as its factorization.

551115001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125, while the sum is 19.

The square root of 551115001 is about 23475.8386644652. The cubic root of 551115001 is about 819.8745599313.

Adding to 551115001 its reverse (100511155), we get a palindrome (651626156).

It can be divided in two parts, 5511 and 15001, that multiplied together give a triangular number (82670511 = T₁₂₈₅₈).

The spelling of 551115001 in words is "five hundred fifty-one million, one hundred fifteen thousand, one".