551940481 has 12 divisors (see below), whose sum is σ = 584699364. Its totient is φ = 520934400.

The previous prime is 551940449. The next prime is 551940503. The reversal of 551940481 is 184049155.

It can be written as a sum of positive squares in 2 ways, for example, as 387459856 + 164480625 = 19684^2 + 12825^2 .

It is not a de Polignac number, because 551940481 - 2⁵ = 551940449 is a prime.

It is a super-2 number, since 2×551940481² = 609276589133022722, which contains 22 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 551940481.

It is not an unprimeable number, because it can be changed into a prime (551940421) 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 in 11 ways as a sum of consecutive naturals, for example, 98721 + ... + 104161.

It is an arithmetic number, because the mean of its divisors is an integer number (48724947).

Almost surely, 2^551940481 is an apocalyptic number.

It is an amenable number.

551940481 is a deficient number, since it is larger than the sum of its proper divisors (32758883).

551940481 is a wasteful number, since it uses less digits than its factorization.

551940481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5760 (or 5741 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 551940481 is about 23493.4135663594. The cubic root of 551940481 is about 820.2837016558.

The spelling of 551940481 in words is "five hundred fifty-one million, nine hundred forty thousand, four hundred eighty-one".