551656117 has 2 divisors, whose sum is σ = 551656118. Its totient is φ = 551656116.

The previous prime is 551656099. The next prime is 551656153. The reversal of 551656117 is 711656155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 513203716 + 38452401 = 22654^2 + 6201^2 .

It is a cyclic number.

It is not a de Polignac number, because 551656117 - 2¹⁹ = 551131829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551656187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275828058 + 275828059.

It is an arithmetic number, because the mean of its divisors is an integer number (275828059).

Almost surely, 2^551656117 is an apocalyptic number.

It is an amenable number.

551656117 is a deficient number, since it is larger than the sum of its proper divisors (1).

551656117 is an equidigital number, since it uses as much as digits as its factorization.

551656117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31500, while the sum is 37.

The square root of 551656117 is about 23487.3607925625. The cubic root of 551656117 is about 820.1428052892.

The spelling of 551656117 in words is "five hundred fifty-one million, six hundred fifty-six thousand, one hundred seventeen".