4915561 has 8 divisors (see below), whose sum is σ = 5769920. Its totient is φ = 4099248.

The previous prime is 4915549. The next prime is 4915571. The reversal of 4915561 is 1655194.

4915561 is digitally balanced in base 3, 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 4915561 - 2⁹ = 4915049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4915501) 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, 9231 + ... + 9748.

It is an arithmetic number, because the mean of its divisors is an integer number (721240).

Almost surely, 2^4915561 is an apocalyptic number.

It is an amenable number.

4915561 is a deficient number, since it is larger than the sum of its proper divisors (854359).

4915561 is a wasteful number, since it uses less digits than its factorization.

4915561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19023.

The product of its digits is 5400, while the sum is 31.

The square root of 4915561 is about 2217.1064476024. The cubic root of 4915561 is about 170.0295335079.

It can be divided in two parts, 4915 and 561, that added together give a square (5476 = 74²).

The spelling of 4915561 in words is "four million, nine hundred fifteen thousand, five hundred sixty-one".