551225687 has 2 divisors, whose sum is σ = 551225688. Its totient is φ = 551225686.

The previous prime is 551225681. The next prime is 551225693. The reversal of 551225687 is 786522155.

It is a balanced prime because it is at equal distance from previous prime (551225681) and next prime (551225693).

It is a cyclic number.

It is not a de Polignac number, because 551225687 - 2²⁶ = 484116823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551225681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275612843 + 275612844.

It is an arithmetic number, because the mean of its divisors is an integer number (275612844).

Almost surely, 2^551225687 is an apocalyptic number.

551225687 is a deficient number, since it is larger than the sum of its proper divisors (1).

551225687 is an equidigital number, since it uses as much as digits as its factorization.

551225687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168000, while the sum is 41.

The square root of 551225687 is about 23478.1959911744. The cubic root of 551225687 is about 819.9294441573.

The spelling of 551225687 in words is "five hundred fifty-one million, two hundred twenty-five thousand, six hundred eighty-seven".