1009052281 has 4 divisors (see below), whose sum is σ = 1009178100. Its totient is φ = 1008926464.

The previous prime is 1009052273. The next prime is 1009052293. The reversal of 1009052281 is 1822509001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1822509001 = 10343 ⋅176207.

It can be written as a sum of positive squares in 2 ways, for example, as 172685881 + 836366400 = 13141^2 + 28920^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009052281 - 2³ = 1009052273 is a prime.

It is a super-2 number, since 2×1009052281² = 2036373011582605922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1009052081) 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, 49996 + ... + 67213.

It is an arithmetic number, because the mean of its divisors is an integer number (252294525).

Almost surely, 2^1009052281 is an apocalyptic number.

It is an amenable number.

1009052281 is a deficient number, since it is larger than the sum of its proper divisors (125819).

1009052281 is an equidigital number, since it uses as much as digits as its factorization.

1009052281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125818.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1009052281 is about 31765.5832781330. The cubic root of 1009052281 is about 1003.0083676486.

The spelling of 1009052281 in words is "one billion, nine million, fifty-two thousand, two hundred eighty-one".