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227252081 = 732464583
BaseRepresentation
bin11011000101110…
…01011101110001
3120211121121020202
431202321131301
5431134031311
634314444545
75426416340
oct1542713561
9524547222
10227252081
11107306941
1264133755
13381095b4
1422277b57
1514e3de3b
hexd8b9771

227252081 has 4 divisors (see below), whose sum is σ = 259716672. Its totient is φ = 194787492.

The previous prime is 227252071. The next prime is 227252083. The reversal of 227252081 is 180252722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-227252081 is a prime.

It is a super-2 number, since 2×2272520812 = 103287016637661122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (227252083) 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, 16232285 + ... + 16232298.

It is an arithmetic number, because the mean of its divisors is an integer number (64929168).

Almost surely, 2227252081 is an apocalyptic number.

It is an amenable number.

227252081 is a deficient number, since it is larger than the sum of its proper divisors (32464591).

227252081 is an equidigital number, since it uses as much as digits as its factorization.

227252081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32464590.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 227252081 is about 15074.8824539364. The cubic root of 227252081 is about 610.2427422334.

The spelling of 227252081 in words is "two hundred twenty-seven million, two hundred fifty-two thousand, eighty-one".

Divisors: 1 7 32464583 227252081