3124561 has 4 divisors (see below), whose sum is σ = 3408624. Its totient is φ = 2840500.

The previous prime is 3124543. The next prime is 3124567. The reversal of 3124561 is 1654213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1654213 = 11 ⋅150383.

It is a cyclic number.

It is not a de Polignac number, because 3124561 - 2¹¹ = 3122513 is a prime.

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 an Ulam number.

It is a Duffinian number.

3124561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3124567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142015 + ... + 142036.

It is an arithmetic number, because the mean of its divisors is an integer number (852156).

Almost surely, 2^3124561 is an apocalyptic number.

It is an amenable number.

3124561 is a deficient number, since it is larger than the sum of its proper divisors (284063).

3124561 is a wasteful number, since it uses less digits than its factorization.

3124561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284062.

The product of its digits is 720, while the sum is 22.

The square root of 3124561 is about 1767.6427806545. The cubic root of 3124561 is about 146.1940404898.

Adding to 3124561 its reverse (1654213), we get a palindrome (4778774).

The spelling of 3124561 in words is "three million, one hundred twenty-four thousand, five hundred sixty-one".