551326237601 has 4 divisors (see below), whose sum is σ = 583757192772. Its totient is φ = 518895282432.

The previous prime is 551326237493. The next prime is 551326237639. The reversal of 551326237601 is 106732623155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 355430592400 + 195895645201 = 596180^2 + 442601^2 .

It is a cyclic number.

It is not a de Polignac number, because 551326237601 - 2³⁰ = 550252495777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551326237691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16215477560 + ... + 16215477593.

It is an arithmetic number, because the mean of its divisors is an integer number (145939298193).

Almost surely, 2^551326237601 is an apocalyptic number.

It is an amenable number.

551326237601 is a deficient number, since it is larger than the sum of its proper divisors (32430955171).

551326237601 is a wasteful number, since it uses less digits than its factorization.

551326237601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32430955170.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 551326237601 in words is "five hundred fifty-one billion, three hundred twenty-six million, two hundred thirty-seven thousand, six hundred one".