4156506 has 36 divisors (see below), whose sum is σ = 9367722. Its totient is φ = 1330992.

The previous prime is 4156447. The next prime is 4156507. The reversal of 4156506 is 6056514.

It is a happy number.

4156506 is a `hidden beast` number, since 4 + 1 + 5 + 650 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2752281 + 1404225 = 1659^2 + 1185^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4156506.

It is not an unprimeable number, because it can be changed into a prime (4156507) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 52575 + ... + 52653.

Almost surely, 2^4156506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4156506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4683861).

4156506 is an abundant number, since it is smaller than the sum of its proper divisors (5211216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4156506 is a wasteful number, since it uses less digits than its factorization.

4156506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 4156506 is about 2038.7510882891. The cubic root of 4156506 is about 160.7839907578.

The spelling of 4156506 in words is "four million, one hundred fifty-six thousand, five hundred six".