5155989 has 4 divisors (see below), whose sum is σ = 6874656. Its totient is φ = 3437324.

The previous prime is 5155961. The next prime is 5155993. The reversal of 5155989 is 9895515.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5155989 - 2⁵ = 5155957 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 5155989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5155489) 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, 859329 + ... + 859334.

It is an arithmetic number, because the mean of its divisors is an integer number (1718664).

Almost surely, 2^5155989 is an apocalyptic number.

It is an amenable number.

5155989 is a deficient number, since it is larger than the sum of its proper divisors (1718667).

5155989 is a wasteful number, since it uses less digits than its factorization.

5155989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718666.

The product of its digits is 81000, while the sum is 42.

The square root of 5155989 is about 2270.6802945373. The cubic root of 5155989 is about 172.7576657589.

The spelling of 5155989 in words is "five million, one hundred fifty-five thousand, nine hundred eighty-nine".