550145287 has 2 divisors, whose sum is σ = 550145288. Its totient is φ = 550145286.

The previous prime is 550145263. The next prime is 550145327. The reversal of 550145287 is 782541055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 550145287 - 2²³ = 541756679 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 (550145207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275072643 + 275072644.

It is an arithmetic number, because the mean of its divisors is an integer number (275072644).

Almost surely, 2^550145287 is an apocalyptic number.

550145287 is a deficient number, since it is larger than the sum of its proper divisors (1).

550145287 is an equidigital number, since it uses as much as digits as its factorization.

550145287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56000, while the sum is 37.

The square root of 550145287 is about 23455.1761238325. The cubic root of 550145287 is about 819.3934077215.

The spelling of 550145287 in words is "five hundred fifty million, one hundred forty-five thousand, two hundred eighty-seven".