2104615451 has 4 divisors (see below), whose sum is σ = 2172506304. Its totient is φ = 2036724600.

The previous prime is 2104615433. The next prime is 2104615459. The reversal of 2104615451 is 1545164012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2104615451 - 2¹⁴ = 2104599067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2104615459) 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, 33945380 + ... + 33945441.

It is an arithmetic number, because the mean of its divisors is an integer number (543126576).

Almost surely, 2^2104615451 is an apocalyptic number.

2104615451 is a deficient number, since it is larger than the sum of its proper divisors (67890853).

2104615451 is an equidigital number, since it uses as much as digits as its factorization.

2104615451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67890852.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 2104615451 is about 45876.0880088963. The cubic root of 2104615451 is about 1281.5166452422.

Adding to 2104615451 its reverse (1545164012), we get a palindrome (3649779463).

The spelling of 2104615451 in words is "two billion, one hundred four million, six hundred fifteen thousand, four hundred fifty-one".