5591623 has 4 divisors (see below), whose sum is σ = 5920560. Its totient is φ = 5262688.

The previous prime is 5591617. The next prime is 5591653. The reversal of 5591623 is 3261955.

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

It is a cyclic number.

It is not a de Polignac number, because 5591623 - 2¹⁷ = 5460551 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 (5591653) 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, 164443 + ... + 164476.

It is an arithmetic number, because the mean of its divisors is an integer number (1480140).

Almost surely, 2^5591623 is an apocalyptic number.

5591623 is a deficient number, since it is larger than the sum of its proper divisors (328937).

5591623 is a wasteful number, since it uses less digits than its factorization.

5591623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328936.

The product of its digits is 8100, while the sum is 31.

The square root of 5591623 is about 2364.6612865271. The cubic root of 5591623 is about 177.4922088758.

The spelling of 5591623 in words is "five million, five hundred ninety-one thousand, six hundred twenty-three".