4156045 has 8 divisors (see below), whose sum is σ = 5009400. Its totient is φ = 3310080.

The previous prime is 4156043. The next prime is 4156063. The reversal of 4156045 is 5406514.

It can be written as a sum of positive squares in 4 ways, for example, as 39204 + 4116841 = 198^2 + 2029^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4156045 - 2¹ = 4156043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4156043) 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, 520 + ... + 2929.

It is an arithmetic number, because the mean of its divisors is an integer number (626175).

Almost surely, 2^4156045 is an apocalyptic number.

It is an amenable number.

4156045 is a deficient number, since it is larger than the sum of its proper divisors (853355).

4156045 is a wasteful number, since it uses less digits than its factorization.

4156045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 4156045 is about 2038.6380257417. The cubic root of 4156045 is about 160.7780463292.

The spelling of 4156045 in words is "four million, one hundred fifty-six thousand, forty-five".