5543618 has 4 divisors (see below), whose sum is σ = 8315430. Its totient is φ = 2771808.

The previous prime is 5543617. The next prime is 5543623. The reversal of 5543618 is 8163455.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8163455 = 5 ⋅1632691.

It can be written as a sum of positive squares in only one way, i.e., 4635409 + 908209 = 2153^2 + 953^2 .

It is not an unprimeable number, because it can be changed into a prime (5543617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1385903 + ... + 1385906.

Almost surely, 2^5543618 is an apocalyptic number.

5543618 is a deficient number, since it is larger than the sum of its proper divisors (2771812).

5543618 is a wasteful number, since it uses less digits than its factorization.

5543618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771811.

The product of its digits is 14400, while the sum is 32.

The square root of 5543618 is about 2354.4889041998. The cubic root of 5543618 is about 176.9828151041.

The spelling of 5543618 in words is "five million, five hundred forty-three thousand, six hundred eighteen".