551064487 has 2 divisors, whose sum is σ = 551064488. Its totient is φ = 551064486.

The previous prime is 551064461. The next prime is 551064497. The reversal of 551064487 is 784460155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551064487 - 2¹¹ = 551062439 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551064497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275532243 + 275532244.

It is an arithmetic number, because the mean of its divisors is an integer number (275532244).

Almost surely, 2^551064487 is an apocalyptic number.

551064487 is a deficient number, since it is larger than the sum of its proper divisors (1).

551064487 is an equidigital number, since it uses as much as digits as its factorization.

551064487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 551064487 is about 23474.7627677044. The cubic root of 551064487 is about 819.8495098607.

The spelling of 551064487 in words is "five hundred fifty-one million, sixty-four thousand, four hundred eighty-seven".