226615509 has 16 divisors (see below), whose sum is σ = 336754240. Its totient is φ = 150614640.

The previous prime is 226615463. The next prime is 226615513. The reversal of 226615509 is 905516622.

It is not a de Polignac number, because 226615509 - 2⁷ = 226615381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226615589) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3742 + ... + 21615.

It is an arithmetic number, because the mean of its divisors is an integer number (21047140).

Almost surely, 2^226615509 is an apocalyptic number.

It is an amenable number.

226615509 is a deficient number, since it is larger than the sum of its proper divisors (110138731).

226615509 is a wasteful number, since it uses less digits than its factorization.

226615509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25697 (or 25691 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 226615509 is about 15053.7539836414. The cubic root of 226615509 is about 609.6724112244.

The spelling of 226615509 in words is "two hundred twenty-six million, six hundred fifteen thousand, five hundred nine".