551335240 has 32 divisors (see below), whose sum is σ = 1283283000. Its totient is φ = 212929024.

The previous prime is 551335237. The next prime is 551335243. The reversal of 551335240 is 42533155.

It is an interprime number because it is at equal distance from previous prime (551335237) and next prime (551335243).

It can be written as a sum of positive squares in 4 ways, for example, as 400880484 + 150454756 = 20022^2 + 12266^2 .

It is a junction number, because it is equal to n+sod(n) for n = 551335199 and 551335208.

It is not an unprimeable number, because it can be changed into a prime (551335243) 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 7 ways as a sum of consecutive naturals, for example, 236485 + ... + 238804.

Almost surely, 2^551335240 is an apocalyptic number.

It is an amenable number.

551335240 is an abundant number, since it is smaller than the sum of its proper divisors (731947760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551335240 is a wasteful number, since it uses less digits than its factorization.

551335240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475329 (or 475325 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 551335240 is about 23480.5289548596. The cubic root of 551335240 is about 819.9837593452.

Adding to 551335240 its reverse (42533155), we get a palindrome (593868395).

The spelling of 551335240 in words is "five hundred fifty-one million, three hundred thirty-five thousand, two hundred forty".