226647551 has 4 divisors (see below), whose sum is σ = 244081992. Its totient is φ = 209213112.

The previous prime is 226647521. The next prime is 226647559. The reversal of 226647551 is 155746622.

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

It is a cyclic number.

It is not a de Polignac number, because 226647551 - 2¹⁰ = 226646527 is a prime.

It is a super-2 number, since 2×226647551² = 102738224748595202, 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 (226647559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8717201 + ... + 8717226.

It is an arithmetic number, because the mean of its divisors is an integer number (61020498).

Almost surely, 2^226647551 is an apocalyptic number.

226647551 is a deficient number, since it is larger than the sum of its proper divisors (17434441).

226647551 is a wasteful number, since it uses less digits than its factorization.

226647551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17434440.

The product of its digits is 100800, while the sum is 38.

The square root of 226647551 is about 15054.8181988359. The cubic root of 226647551 is about 609.7011444781.

The spelling of 226647551 in words is "two hundred twenty-six million, six hundred forty-seven thousand, five hundred fifty-one".