4013555 has 16 divisors (see below), whose sum is σ = 5928384. Its totient is φ = 2540160.

The previous prime is 4013543. The next prime is 4013557. The reversal of 4013555 is 5553104.

It is a de Polignac number, because none of the positive numbers 2^k-4013555 is a prime.

It is a super-2 number, since 2×4013555² = 32217247476050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4013555.

It is not an unprimeable number, because it can be changed into a prime (4013557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3956 + ... + 4865.

It is an arithmetic number, because the mean of its divisors is an integer number (370524).

Almost surely, 2^4013555 is an apocalyptic number.

4013555 is a deficient number, since it is larger than the sum of its proper divisors (1914829).

4013555 is a wasteful number, since it uses less digits than its factorization.

4013555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8846.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 4013555 is about 2003.3858839475. The cubic root of 4013555 is about 158.9192132087.

Adding to 4013555 its reverse (5553104), we get a palindrome (9566659).

The spelling of 4013555 in words is "four million, thirteen thousand, five hundred fifty-five".