3815541 has 6 divisors (see below), whose sum is σ = 5511350. Its totient is φ = 2543688.

The previous prime is 3815533. The next prime is 3815549. The reversal of 3815541 is 1455183.

It is an interprime number because it is at equal distance from previous prime (3815533) and next prime (3815549).

It can be written as a sum of positive squares in only one way, i.e., 3437316 + 378225 = 1854^2 + 615^2 .

It is not a de Polignac number, because 3815541 - 2³ = 3815533 is a prime.

It is a Duffinian number.

It is a Curzon number.

3815541 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3815549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 211966 + ... + 211983.

Almost surely, 2^3815541 is an apocalyptic number.

It is an amenable number.

3815541 is a deficient number, since it is larger than the sum of its proper divisors (1695809).

3815541 is a wasteful number, since it uses less digits than its factorization.

3815541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423955 (or 423952 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 3815541 is about 1953.3409840578. The cubic root of 3815541 is about 156.2615189375.

It can be divided in two parts, 3815 and 541, that added together give a square (4356 = 66²).

The spelling of 3815541 in words is "three million, eight hundred fifteen thousand, five hundred forty-one".