2587440561 has 8 divisors (see below), whose sum is σ = 3450488064. Its totient is φ = 1724676720.

The previous prime is 2587440553. The next prime is 2587440601. The reversal of 2587440561 is 1650447852.

It is a happy number.

2587440561 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 2587440561 - 2³ = 2587440553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2587480561) 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, 48630 + ... + 86831.

It is an arithmetic number, because the mean of its divisors is an integer number (431311008).

Almost surely, 2^2587440561 is an apocalyptic number.

It is an amenable number.

2587440561 is a deficient number, since it is larger than the sum of its proper divisors (863047503).

2587440561 is a wasteful number, since it uses less digits than its factorization.

2587440561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141831.

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 2587440561 is about 50866.8906165887. The cubic root of 2587440561 is about 1372.8511777842.

The spelling of 2587440561 in words is "two billion, five hundred eighty-seven million, four hundred forty thousand, five hundred sixty-one".