551115413 has 2 divisors, whose sum is σ = 551115414. Its totient is φ = 551115412.

The previous prime is 551115379. The next prime is 551115451. The reversal of 551115413 is 314511155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 469718929 + 81396484 = 21673^2 + 9022^2 .

It is a cyclic number.

It is not a de Polignac number, because 551115413 - 2¹² = 551111317 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551115473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275557706 + 275557707.

It is an arithmetic number, because the mean of its divisors is an integer number (275557707).

Almost surely, 2^551115413 is an apocalyptic number.

It is an amenable number.

551115413 is a deficient number, since it is larger than the sum of its proper divisors (1).

551115413 is an equidigital number, since it uses as much as digits as its factorization.

551115413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1500, while the sum is 26.

The square root of 551115413 is about 23475.8474394429. The cubic root of 551115413 is about 819.8747642372.

Adding to 551115413 its reverse (314511155), we get a palindrome (865626568).

The spelling of 551115413 in words is "five hundred fifty-one million, one hundred fifteen thousand, four hundred thirteen".