1047054661 has 4 divisors (see below), whose sum is σ = 1047141900. Its totient is φ = 1046967424.

The previous prime is 1047054653. The next prime is 1047054677. The reversal of 1047054661 is 1664507401.

1047054661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1664507401 = 23 ⋅72369887.

It can be written as a sum of positive squares in 2 ways, for example, as 729324036 + 317730625 = 27006^2 + 17825^2 .

It is a cyclic number.

It is not a de Polignac number, because 1047054661 - 2³ = 1047054653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047054611) 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, 22066 + ... + 50803.

It is an arithmetic number, because the mean of its divisors is an integer number (261785475).

Almost surely, 2^1047054661 is an apocalyptic number.

It is an amenable number.

1047054661 is a deficient number, since it is larger than the sum of its proper divisors (87239).

1047054661 is an equidigital number, since it uses as much as digits as its factorization.

1047054661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87238.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1047054661 is about 32358.2240087431. The cubic root of 1047054661 is about 1015.4451075038.

The spelling of 1047054661 in words is "one billion, forty-seven million, fifty-four thousand, six hundred sixty-one".