4012545 has 16 divisors (see below), whose sum is σ = 6570432. Its totient is φ = 2089920.

The previous prime is 4012537. The next prime is 4012549. The reversal of 4012545 is 5452104.

It is not a de Polignac number, because 4012545 - 2³ = 4012537 is a prime.

It is a super-2 number, since 2×4012545² = 32201034754050, which contains 22 as substring.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (4012549) 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, 2466 + ... + 3755.

It is an arithmetic number, because the mean of its divisors is an integer number (410652).

Almost surely, 2^4012545 is an apocalyptic number.

It is an amenable number.

4012545 is a deficient number, since it is larger than the sum of its proper divisors (2557887).

4012545 is a wasteful number, since it uses less digits than its factorization.

4012545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6272.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 4012545 is about 2003.1337948325. The cubic root of 4012545 is about 158.9058815637.

Adding to 4012545 its reverse (5452104), we get a palindrome (9464649).

The spelling of 4012545 in words is "four million, twelve thousand, five hundred forty-five".