1047280081 has 4 divisors (see below), whose sum is σ = 1047366964. Its totient is φ = 1047193200.

The previous prime is 1047280063. The next prime is 1047280109. The reversal of 1047280081 is 1800827401.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 306950400 + 740329681 = 17520^2 + 27209^2 .

It is a cyclic number.

It is not a de Polignac number, because 1047280081 - 2¹⁷ = 1047149009 is a prime.

It is a super-2 number, since 2×1047280081² = 2193591136118733122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1047280051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21750 + ... + 50671.

It is an arithmetic number, because the mean of its divisors is an integer number (261841741).

Almost surely, 2^1047280081 is an apocalyptic number.

It is an amenable number.

1047280081 is a deficient number, since it is larger than the sum of its proper divisors (86883).

1047280081 is an equidigital number, since it uses as much as digits as its factorization.

1047280081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86882.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 1047280081 is about 32361.7070161634. The cubic root of 1047280081 is about 1015.5179738720.

The spelling of 1047280081 in words is "one billion, forty-seven million, two hundred eighty thousand, eighty-one".