551140313 has 2 divisors, whose sum is σ = 551140314. Its totient is φ = 551140312.

The previous prime is 551140301. The next prime is 551140349. The reversal of 551140313 is 313041155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 537868864 + 13271449 = 23192^2 + 3643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551140313 is a prime.

It is a super-2 number, since 2×551140313² = 607511289227475938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (551140363) 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 as a sum of consecutive naturals, namely, 275570156 + 275570157.

It is an arithmetic number, because the mean of its divisors is an integer number (275570157).

Almost surely, 2^551140313 is an apocalyptic number.

It is an amenable number.

551140313 is a deficient number, since it is larger than the sum of its proper divisors (1).

551140313 is an equidigital number, since it uses as much as digits as its factorization.

551140313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 551140313 is about 23476.3777657457. The cubic root of 551140313 is about 819.8871116656.

Adding to 551140313 its reverse (313041155), we get a palindrome (864181468).

The spelling of 551140313 in words is "five hundred fifty-one million, one hundred forty thousand, three hundred thirteen".