11263509 has 16 divisors (see below), whose sum is σ = 17226240. Its totient is φ = 7266240.

The previous prime is 11263493. The next prime is 11263517. The reversal of 11263509 is 90536211.

It is not a de Polignac number, because 11263509 - 2⁴ = 11263493 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11263559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5892 + ... + 7565.

It is an arithmetic number, because the mean of its divisors is an integer number (1076640).

Almost surely, 2^11263509 is an apocalyptic number.

It is an amenable number.

11263509 is a deficient number, since it is larger than the sum of its proper divisors (5962731).

11263509 is a wasteful number, since it uses less digits than its factorization.

11263509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13497 (or 13491 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 11263509 is about 3356.1151648893. The cubic root of 11263509 is about 224.1598892997.

The spelling of 11263509 in words is "eleven million, two hundred sixty-three thousand, five hundred nine".