226405551 has 4 divisors (see below), whose sum is σ = 301874072. Its totient is φ = 150937032.

The previous prime is 226405549. The next prime is 226405561. The reversal of 226405551 is 155504622.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 226405551 - 2¹ = 226405549 is a prime.

It is a super-2 number, since 2×226405551² = 102518947047227202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226405561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37734256 + ... + 37734261.

It is an arithmetic number, because the mean of its divisors is an integer number (75468518).

Almost surely, 2^226405551 is an apocalyptic number.

226405551 is a deficient number, since it is larger than the sum of its proper divisors (75468521).

226405551 is an equidigital number, since it uses as much as digits as its factorization.

226405551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75468520.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 226405551 is about 15046.7787582592. The cubic root of 226405551 is about 609.4840670209.

The spelling of 226405551 in words is "two hundred twenty-six million, four hundred five thousand, five hundred fifty-one".