2456505561 has 8 divisors (see below), whose sum is σ = 3275575744. Its totient is φ = 1637552880.

The previous prime is 2456505539. The next prime is 2456505587. The reversal of 2456505561 is 1655056542.

It is a happy number.

2456505561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2456505561 - 2¹³ = 2456497369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2456505511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50220 + ... + 86226.

It is an arithmetic number, because the mean of its divisors is an integer number (409446968).

Almost surely, 2^2456505561 is an apocalyptic number.

It is an amenable number.

2456505561 is a deficient number, since it is larger than the sum of its proper divisors (819070183).

2456505561 is a wasteful number, since it uses less digits than its factorization.

2456505561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58751.

The product of its (nonzero) digits is 180000, while the sum is 39.

The square root of 2456505561 is about 49563.1472063669. The cubic root of 2456505561 is about 1349.2919123426.

The spelling of 2456505561 in words is "two billion, four hundred fifty-six million, five hundred five thousand, five hundred sixty-one".