5521691 has 4 divisors (see below), whose sum is σ = 6310512. Its totient is φ = 4732872.

The previous prime is 5521669. The next prime is 5521693. The reversal of 5521691 is 1961255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1961255 = 5 ⋅392251.

It is a cyclic number.

It is not a de Polignac number, because 5521691 - 2¹⁸ = 5259547 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5521693) 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, 394400 + ... + 394413.

It is an arithmetic number, because the mean of its divisors is an integer number (1577628).

Almost surely, 2^5521691 is an apocalyptic number.

5521691 is a deficient number, since it is larger than the sum of its proper divisors (788821).

5521691 is an equidigital number, since it uses as much as digits as its factorization.

5521691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788820.

The product of its digits is 2700, while the sum is 29.

The square root of 5521691 is about 2349.8278660361. The cubic root of 5521691 is about 176.7491632433.

The spelling of 5521691 in words is "five million, five hundred twenty-one thousand, six hundred ninety-one".