801103509 has 12 divisors (see below), whose sum is σ = 1164080736. Its totient is φ = 530869992.

The previous prime is 801103487. The next prime is 801103553. The reversal of 801103509 is 905301108.

It is not a de Polignac number, because 801103509 - 2⁵ = 801103477 is a prime.

It is a super-2 number, since 2×801103509² = 1283533664264226162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801105509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264999 + ... + 268004.

It is an arithmetic number, because the mean of its divisors is an integer number (97006728).

Almost surely, 2^801103509 is an apocalyptic number.

It is an amenable number.

801103509 is a deficient number, since it is larger than the sum of its proper divisors (362977227).

801103509 is a wasteful number, since it uses less digits than its factorization.

801103509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533176 (or 533173 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 801103509 is about 28303.7719924395. The cubic root of 801103509 is about 928.7444068698.

The spelling of 801103509 in words is "eight hundred one million, one hundred three thousand, five hundred nine".