551245311 has 16 divisors (see below), whose sum is σ = 844821600. Its totient is φ = 354824064.

The previous prime is 551245283. The next prime is 551245313. The reversal of 551245311 is 113542155.

551245311 is a `hidden beast` number, since 5 + 5 + 124 + 531 + 1 = 666.

It is not a de Polignac number, because 551245311 - 2⁷ = 551245183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551245313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351226 + ... + 352791.

It is an arithmetic number, because the mean of its divisors is an integer number (52801350).

Almost surely, 2^551245311 is an apocalyptic number.

551245311 is a deficient number, since it is larger than the sum of its proper divisors (293576289).

551245311 is a wasteful number, since it uses less digits than its factorization.

551245311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704055 (or 704049 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 551245311 is about 23478.6139071283. The cubic root of 551245311 is about 819.9391740525.

Adding to 551245311 its reverse (113542155), we get a palindrome (664787466).

The spelling of 551245311 in words is "five hundred fifty-one million, two hundred forty-five thousand, three hundred eleven".