5155819 has 4 divisors (see below), whose sum is σ = 5196544. Its totient is φ = 5115096.

The previous prime is 5155817. The next prime is 5155849. The reversal of 5155819 is 9185515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9185515 = 5 ⋅1837103.

It is a cyclic number.

It is not a de Polignac number, because 5155819 - 2¹ = 5155817 is a prime.

It is a super-2 number, since 2×5155819² = 53164939121522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5155817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20172 + ... + 20425.

It is an arithmetic number, because the mean of its divisors is an integer number (1299136).

Almost surely, 2^5155819 is an apocalyptic number.

5155819 is a deficient number, since it is larger than the sum of its proper divisors (40725).

5155819 is a wasteful number, since it uses less digits than its factorization.

5155819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40724.

The product of its digits is 9000, while the sum is 34.

The square root of 5155819 is about 2270.6428605133. The cubic root of 5155819 is about 172.7557670527.

The spelling of 5155819 in words is "five million, one hundred fifty-five thousand, eight hundred nineteen".