551290801 has 2 divisors, whose sum is σ = 551290802. Its totient is φ = 551290800.

The previous prime is 551290799. The next prime is 551290843. The reversal of 551290801 is 108092155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 401962401 + 149328400 = 20049^2 + 12220^2 .

It is a cyclic number.

It is not a de Polignac number, because 551290801 - 2¹ = 551290799 is a prime.

Together with 551290799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (551290891) 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 as a sum of consecutive naturals, namely, 275645400 + 275645401.

It is an arithmetic number, because the mean of its divisors is an integer number (275645401).

Almost surely, 2^551290801 is an apocalyptic number.

It is an amenable number.

551290801 is a deficient number, since it is larger than the sum of its proper divisors (1).

551290801 is an equidigital number, since it uses as much as digits as its factorization.

551290801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 551290801 is about 23479.5826410948. The cubic root of 551290801 is about 819.9617278390.

The spelling of 551290801 in words is "five hundred fifty-one million, two hundred ninety thousand, eight hundred one".