551050500561 has 16 divisors (see below), whose sum is σ = 802096931520. Its totient is φ = 333732945920.

The previous prime is 551050500541. The next prime is 551050500563. The reversal of 551050500561 is 165005050155.

It is not a de Polignac number, because 551050500561 - 2³¹ = 548903016913 is a prime.

It is a super-2 number, since 2×551050500561² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (551050500563) 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 15 ways as a sum of consecutive naturals, for example, 5879160 + ... + 5972153.

It is an arithmetic number, because the mean of its divisors is an integer number (50131058220).

Almost surely, 2^551050500561 is an apocalyptic number.

It is an amenable number.

551050500561 is a deficient number, since it is larger than the sum of its proper divisors (251046430959).

551050500561 is a wasteful number, since it uses less digits than its factorization.

551050500561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11852736.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 551050500561 in words is "five hundred fifty-one billion, fifty million, five hundred thousand, five hundred sixty-one".