5751561 has 4 divisors (see below), whose sum is σ = 7668752. Its totient is φ = 3834372.

The previous prime is 5751553. The next prime is 5751607. The reversal of 5751561 is 1651575.

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.

It is not a de Polignac number, because 5751561 - 2³ = 5751553 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5751961) 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 3 ways as a sum of consecutive naturals, for example, 958591 + ... + 958596.

It is an arithmetic number, because the mean of its divisors is an integer number (1917188).

Almost surely, 2^5751561 is an apocalyptic number.

It is an amenable number.

5751561 is a deficient number, since it is larger than the sum of its proper divisors (1917191).

5751561 is a wasteful number, since it uses less digits than its factorization.

5751561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917190.

The product of its digits is 5250, while the sum is 30.

The square root of 5751561 is about 2398.2412305688. The cubic root of 5751561 is about 179.1686040774.

The spelling of 5751561 in words is "five million, seven hundred fifty-one thousand, five hundred sixty-one".