4002561545 has 8 divisors (see below), whose sum is σ = 5011903296. Its totient is φ = 3062829616.

The previous prime is 4002561523. The next prime is 4002561547. The reversal of 4002561545 is 5451652004.

4002561545 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 a cyclic number.

It is not a de Polignac number, because 4002561545 - 2⁸ = 4002561289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4002561547) 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, 17402327 + ... + 17402556.

It is an arithmetic number, because the mean of its divisors is an integer number (626487912).

Almost surely, 2^4002561545 is an apocalyptic number.

It is an amenable number.

4002561545 is a deficient number, since it is larger than the sum of its proper divisors (1009341751).

4002561545 is a wasteful number, since it uses less digits than its factorization.

4002561545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34804911.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 4002561545 is about 63265.8007536457. The cubic root of 4002561545 is about 1587.7398295979.

The spelling of 4002561545 in words is "four billion, two million, five hundred sixty-one thousand, five hundred forty-five".