545263987 has 2 divisors, whose sum is σ = 545263988. Its totient is φ = 545263986.

The previous prime is 545263981. The next prime is 545263997. The reversal of 545263987 is 789362545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545263987 - 2²³ = 536875379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 545263987.

It is not a weakly prime, because it can be changed into another prime (545263981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272631993 + 272631994.

It is an arithmetic number, because the mean of its divisors is an integer number (272631994).

Almost surely, 2^545263987 is an apocalyptic number.

545263987 is a deficient number, since it is larger than the sum of its proper divisors (1).

545263987 is an equidigital number, since it uses as much as digits as its factorization.

545263987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 49.

The square root of 545263987 is about 23350.8883556922. Note that the first 3 decimals coincide. The cubic root of 545263987 is about 816.9627812118.

The spelling of 545263987 in words is "five hundred forty-five million, two hundred sixty-three thousand, nine hundred eighty-seven".