3516561 has 16 divisors (see below), whose sum is σ = 5252800. Its totient is φ = 2325024.

The previous prime is 3516553. The next prime is 3516593. The reversal of 3516561 is 1656153.

It is a happy number.

3516561 is a `hidden beast` number, since 3 + 5 + 1 + 656 + 1 = 666.

It is not a de Polignac number, because 3516561 - 2³ = 3516553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (3516521) 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, 3285 + ... + 4221.

It is an arithmetic number, because the mean of its divisors is an integer number (328300).

Almost surely, 2^3516561 is an apocalyptic number.

It is an amenable number.

3516561 is a deficient number, since it is larger than the sum of its proper divisors (1736239).

3516561 is a wasteful number, since it uses less digits than its factorization.

3516561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085 (or 1079 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 3516561 is about 1875.2495833888. The cubic root of 3516561 is about 152.0685430708.

The spelling of 3516561 in words is "three million, five hundred sixteen thousand, five hundred sixty-one".