551125013 has 2 divisors, whose sum is σ = 551125014. Its totient is φ = 551125012.

The previous prime is 551124979. The next prime is 551125021. The reversal of 551125013 is 310521155.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 509043844 + 42081169 = 22562^2 + 6487^2 .

It is a cyclic number.

It is not a de Polignac number, because 551125013 - 2²⁶ = 484016149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551125013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551125073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275562506 + 275562507.

It is an arithmetic number, because the mean of its divisors is an integer number (275562507).

Almost surely, 2^551125013 is an apocalyptic number.

It is an amenable number.

551125013 is a deficient number, since it is larger than the sum of its proper divisors (1).

551125013 is an equidigital number, since it uses as much as digits as its factorization.

551125013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 551125013 is about 23476.0519040149. The cubic root of 551125013 is about 819.8795247356.

Adding to 551125013 its reverse (310521155), we get a palindrome (861646168).

The spelling of 551125013 in words is "five hundred fifty-one million, one hundred twenty-five thousand, thirteen".