5405018 has 4 divisors (see below), whose sum is σ = 8107530. Its totient is φ = 2702508.

The previous prime is 5405011. The next prime is 5405021. The reversal of 5405018 is 8105045.

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., 3948169 + 1456849 = 1987^2 + 1207^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5404984 and 5405002.

It is not an unprimeable number, because it can be changed into a prime (5405011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1351253 + ... + 1351256.

Almost surely, 2^5405018 is an apocalyptic number.

5405018 is a deficient number, since it is larger than the sum of its proper divisors (2702512).

5405018 is a wasteful number, since it uses less digits than its factorization.

5405018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702511.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 5405018 is about 2324.8694587009. The cubic root of 5405018 is about 175.4953908796.

The spelling of 5405018 in words is "five million, four hundred five thousand, eighteen".