2904107561 has 4 divisors (see below), whose sum is σ = 2904229572. Its totient is φ = 2903985552.

The previous prime is 2904107551. The next prime is 2904107567. The reversal of 2904107561 is 1657014092.

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 2792488336 + 111619225 = 52844^2 + 10565^2 .

It is a cyclic number.

It is not a de Polignac number, because 2904107561 - 2¹⁰ = 2904106537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2904107567) 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, 12386 + ... + 77211.

It is an arithmetic number, because the mean of its divisors is an integer number (726057393).

Almost surely, 2^2904107561 is an apocalyptic number.

It is an amenable number.

2904107561 is a deficient number, since it is larger than the sum of its proper divisors (122011).

2904107561 is an equidigital number, since it uses as much as digits as its factorization.

2904107561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122010.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 2904107561 is about 53889.7723227701. The cubic root of 2904107561 is about 1426.7161121815.

The spelling of 2904107561 in words is "two billion, nine hundred four million, one hundred seven thousand, five hundred sixty-one".