4621561 has 8 divisors (see below), whose sum is σ = 5410944. Its totient is φ = 3864480.

The previous prime is 4621537. The next prime is 4621571. The reversal of 4621561 is 1651264.

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 4621561 - 2⁹ = 4621049 is a prime.

It is a super-3 number, since 3×4621561³ (a number of 21 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (4621531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7765 + ... + 8338.

It is an arithmetic number, because the mean of its divisors is an integer number (676368).

Almost surely, 2^4621561 is an apocalyptic number.

4621561 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4621561 is a deficient number, since it is larger than the sum of its proper divisors (789383).

4621561 is a wasteful number, since it uses less digits than its factorization.

4621561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16151.

The product of its digits is 1440, while the sum is 25.

The square root of 4621561 is about 2149.7816168160. The cubic root of 4621561 is about 166.5697868078.

The spelling of 4621561 in words is "four million, six hundred twenty-one thousand, five hundred sixty-one".