551781258901 has 8 divisors (see below), whose sum is σ = 552279117600. Its totient is φ = 551283617040.

The previous prime is 551781258851. The next prime is 551781258907. The reversal of 551781258901 is 109852187155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551781258901 - 2²¹ = 551779161749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551781258907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5270695 + ... + 5374363.

It is an arithmetic number, because the mean of its divisors is an integer number (69034889700).

Almost surely, 2^551781258901 is an apocalyptic number.

It is an amenable number.

551781258901 is a deficient number, since it is larger than the sum of its proper divisors (497858699).

551781258901 is a wasteful number, since it uses less digits than its factorization.

551781258901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108419.

The product of its (nonzero) digits is 1008000, while the sum is 52.

The spelling of 551781258901 in words is "five hundred fifty-one billion, seven hundred eighty-one million, two hundred fifty-eight thousand, nine hundred one".