5591506 has 4 divisors (see below), whose sum is σ = 8387262. Its totient is φ = 2795752.

The previous prime is 5591503. The next prime is 5591513. The reversal of 5591506 is 6051955.

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 only one way, i.e., 2839225 + 2752281 = 1685^2 + 1659^2 .

It is not an unprimeable number, because it can be changed into a prime (5591503) 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 as a sum of consecutive naturals, namely, 1397875 + ... + 1397878.

Almost surely, 2^5591506 is an apocalyptic number.

5591506 is a deficient number, since it is larger than the sum of its proper divisors (2795756).

5591506 is a wasteful number, since it uses less digits than its factorization.

5591506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795755.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 5591506 is about 2364.6365471252. The cubic root of 5591506 is about 177.4909709088.

The spelling of 5591506 in words is "five million, five hundred ninety-one thousand, five hundred six".