5591816 has 8 divisors (see below), whose sum is σ = 10484670. Its totient is φ = 2795904.

The previous prime is 5591813. The next prime is 5591819. The reversal of 5591816 is 6181955.

It is an interprime number because it is at equal distance from previous prime (5591813) and next prime (5591819).

It can be written as a sum of positive squares in only one way, i.e., 2856100 + 2735716 = 1690^2 + 1654^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (5591813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349481 + ... + 349496.

Almost surely, 2^5591816 is an apocalyptic number.

It is an amenable number.

5591816 is a deficient number, since it is larger than the sum of its proper divisors (4892854).

5591816 is a wasteful number, since it uses less digits than its factorization.

5591816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698983 (or 698979 counting only the distinct ones).

The product of its digits is 10800, while the sum is 35.

The square root of 5591816 is about 2364.7020954023. The cubic root of 5591816 is about 177.4942509544.

The spelling of 5591816 in words is "five million, five hundred ninety-one thousand, eight hundred sixteen".