4012555 has 4 divisors (see below), whose sum is σ = 4815072. Its totient is φ = 3210040.

The previous prime is 4012549. The next prime is 4012573. The reversal of 4012555 is 5552104.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4012555 - 2¹¹ = 4010507 is a prime.

It is a super-2 number, since 2×4012555² = 32201195256050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401251 + ... + 401260.

It is an arithmetic number, because the mean of its divisors is an integer number (1203768).

Almost surely, 2^4012555 is an apocalyptic number.

4012555 is a deficient number, since it is larger than the sum of its proper divisors (802517).

4012555 is an equidigital number, since it uses as much as digits as its factorization.

4012555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802516.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 4012555 is about 2003.1362909198. The cubic root of 4012555 is about 158.9060135711.

Adding to 4012555 its reverse (5552104), we get a palindrome (9564659).

The spelling of 4012555 in words is "four million, twelve thousand, five hundred fifty-five".