263264545 has 8 divisors (see below), whose sum is σ = 317555496. Its totient is φ = 209519616.

The previous prime is 263264537. The next prime is 263264557. The reversal of 263264545 is 545462362.

It can be written as a sum of positive squares in 4 ways, for example, as 49900096 + 213364449 = 7064^2 + 14607^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 263264545 - 2³ = 263264537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135442 + ... + 137371.

It is an arithmetic number, because the mean of its divisors is an integer number (39694437).

Almost surely, 2^263264545 is an apocalyptic number.

It is an amenable number.

263264545 is a deficient number, since it is larger than the sum of its proper divisors (54290951).

263264545 is a wasteful number, since it uses less digits than its factorization.

263264545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273011.

The product of its digits is 172800, while the sum is 37.

The square root of 263264545 is about 16225.4289619720. The cubic root of 263264545 is about 640.9106056120.

The spelling of 263264545 in words is "two hundred sixty-three million, two hundred sixty-four thousand, five hundred forty-five".