5151985 has 8 divisors (see below), whose sum is σ = 6261120. Its totient is φ = 4069104.

The previous prime is 5151967. The next prime is 5151989. The reversal of 5151985 is 5891515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5151985 - 2⁵ = 5151953 is a prime.

5151985 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5151985.

It is not an unprimeable number, because it can be changed into a prime (5151989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6127 + ... + 6916.

It is an arithmetic number, because the mean of its divisors is an integer number (782640).

Almost surely, 2^5151985 is an apocalyptic number.

It is an amenable number.

5151985 is a deficient number, since it is larger than the sum of its proper divisors (1109135).

5151985 is a wasteful number, since it uses less digits than its factorization.

5151985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13127.

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

The square root of 5151985 is about 2269.7984492020. The cubic root of 5151985 is about 172.7129345523.

It can be divided in two parts, 515 and 1985, that added together give a square (2500 = 50²).

The spelling of 5151985 in words is "five million, one hundred fifty-one thousand, nine hundred eighty-five".