5591945 has 8 divisors (see below), whose sum is σ = 6729480. Its totient is φ = 4460800.

The previous prime is 5591941. The next prime is 5591969. The reversal of 5591945 is 5491955.

It can be written as a sum of positive squares in 4 ways, for example, as 2483776 + 3108169 = 1576^2 + 1763^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5591945 - 2² = 5591941 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5591899 and 5591908.

It is not an unprimeable number, because it can be changed into a prime (5591941) 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 7 ways as a sum of consecutive naturals, for example, 611 + ... + 3399.

It is an arithmetic number, because the mean of its divisors is an integer number (841185).

Almost surely, 2^5591945 is an apocalyptic number.

It is an amenable number.

5591945 is a deficient number, since it is larger than the sum of its proper divisors (1137535).

5591945 is a wasteful number, since it uses less digits than its factorization.

5591945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3195.

The product of its digits is 40500, while the sum is 38.

The square root of 5591945 is about 2364.7293714081. The cubic root of 5591945 is about 177.4956158409.

The spelling of 5591945 in words is "five million, five hundred ninety-one thousand, nine hundred forty-five".