226251521 has 8 divisors (see below), whose sum is σ = 239698440. Its totient is φ = 212819968.

The previous prime is 226251503. The next prime is 226251539. The reversal of 226251521 is 125152622.

It is an interprime number because it is at equal distance from previous prime (226251503) and next prime (226251539).

It can be written as a sum of positive squares in 4 ways, for example, as 72863296 + 153388225 = 8536^2 + 12385^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 226251521 - 2⁶ = 226251457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226251721) 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 7 ways as a sum of consecutive naturals, for example, 42665 + ... + 47673.

It is an arithmetic number, because the mean of its divisors is an integer number (29962305).

Almost surely, 2^226251521 is an apocalyptic number.

It is an amenable number.

226251521 is a deficient number, since it is larger than the sum of its proper divisors (13446919).

226251521 is a wasteful number, since it uses less digits than its factorization.

226251521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7683.

The product of its digits is 2400, while the sum is 26.

The square root of 226251521 is about 15041.6595161571. The cubic root of 226251521 is about 609.3458193382.

The spelling of 226251521 in words is "two hundred twenty-six million, two hundred fifty-one thousand, five hundred twenty-one".