5756621 has 4 divisors (see below), whose sum is σ = 6199452. Its totient is φ = 5313792.

The previous prime is 5756599. The next prime is 5756623. The reversal of 5756621 is 1266575.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1240996 + 4515625 = 1114^2 + 2125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5756621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5756623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221396 + ... + 221421.

It is an arithmetic number, because the mean of its divisors is an integer number (1549863).

Almost surely, 2^5756621 is an apocalyptic number.

It is an amenable number.

5756621 is a deficient number, since it is larger than the sum of its proper divisors (442831).

5756621 is a wasteful number, since it uses less digits than its factorization.

5756621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442830.

The product of its digits is 12600, while the sum is 32.

The square root of 5756621 is about 2399.2959383953. The cubic root of 5756621 is about 179.2211305367.

The spelling of 5756621 in words is "five million, seven hundred fifty-six thousand, six hundred twenty-one".