5611761 has 20 divisors (see below), whose sum is σ = 8675700. Its totient is φ = 3610656.

The previous prime is 5611759. The next prime is 5611763. The reversal of 5611761 is 1671165.

It is an interprime number because it is at equal distance from previous prime (5611759) and next prime (5611763).

It can be written as a sum of positive squares in 2 ways, for example, as 2073600 + 3538161 = 1440^2 + 1881^2 .

It is not a de Polignac number, because 5611761 - 2¹ = 5611759 is a prime.

It is a super-2 number, since 2×5611761² = 62983723042242, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (5611763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1155 + ... + 3543.

It is an arithmetic number, because the mean of its divisors is an integer number (433785).

Almost surely, 2^5611761 is an apocalyptic number.

It is an amenable number.

5611761 is a deficient number, since it is larger than the sum of its proper divisors (3063939).

5611761 is a wasteful number, since it uses less digits than its factorization.

5611761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430 (or 2421 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 5611761 is about 2368.9155746881. The cubic root of 5611761 is about 177.7050305511.

The spelling of 5611761 in words is "five million, six hundred eleven thousand, seven hundred sixty-one".