4081563 has 8 divisors (see below), whose sum is σ = 6046800. Its totient is φ = 2721024.

The previous prime is 4081549. The next prime is 4081579. The reversal of 4081563 is 3651804.

It is not a de Polignac number, because 4081563 - 2⁸ = 4081307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 151169 = 4081563 / (4 + 0 + 8 + 1 + 5 + 6 + 3).

It is not an unprimeable number, because it can be changed into a prime (4081543) 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, 75558 + ... + 75611.

It is an arithmetic number, because the mean of its divisors is an integer number (755850).

Almost surely, 2^4081563 is an apocalyptic number.

4081563 is a deficient number, since it is larger than the sum of its proper divisors (1965237).

4081563 is a wasteful number, since it uses less digits than its factorization.

4081563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151178 (or 151172 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 4081563 is about 2020.2878507777. The cubic root of 4081563 is about 159.8117969385.

The spelling of 4081563 in words is "four million, eighty-one thousand, five hundred sixty-three".