2451463561 has 4 divisors (see below), whose sum is σ = 2460509824. Its totient is φ = 2442417300.

The previous prime is 2451463507. The next prime is 2451463577. The reversal of 2451463561 is 1653641542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2451463561 - 2⁷ = 2451463433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2451463561.

It is not an unprimeable number, because it can be changed into a prime (2451463661) 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, 4522725 + ... + 4523266.

It is an arithmetic number, because the mean of its divisors is an integer number (615127456).

Almost surely, 2^2451463561 is an apocalyptic number.

It is an amenable number.

2451463561 is a deficient number, since it is larger than the sum of its proper divisors (9046263).

2451463561 is an equidigital number, since it uses as much as digits as its factorization.

2451463561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9046262.

The product of its digits is 86400, while the sum is 37.

The square root of 2451463561 is about 49512.2566744841. The cubic root of 2451463561 is about 1348.3681353943.

The spelling of 2451463561 in words is "two billion, four hundred fifty-one million, four hundred sixty-three thousand, five hundred sixty-one".