551632595404561 has 16 divisors (see below), whose sum is σ = 606915607707648. Its totient is φ = 497210507211600.

The previous prime is 551632595404549. The next prime is 551632595404567. The reversal of 551632595404561 is 165404595236155.

It is a cyclic number.

It is not a de Polignac number, because 551632595404561 - 2³¹ = 551630447920913 is a prime.

It is a super-3 number, since 3×551632595404561³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 551632595404561.

It is not an unprimeable number, because it can be changed into a prime (551632595404567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126819205 + ... + 131096818.

It is an arithmetic number, because the mean of its divisors is an integer number (37932225481728).

Almost surely, 2^{551632595404561} is an apocalyptic number.

It is an amenable number.

551632595404561 is a deficient number, since it is larger than the sum of its proper divisors (55283012303087).

551632595404561 is a wasteful number, since it uses less digits than its factorization.

551632595404561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257917692.

The product of its (nonzero) digits is 97200000, while the sum is 61.

The spelling of 551632595404561 in words is "five hundred fifty-one trillion, six hundred thirty-two billion, five hundred ninety-five million, four hundred four thousand, five hundred sixty-one".