5151231 has 24 divisors (see below), whose sum is σ = 7722000. Its totient is φ = 3307392.

The previous prime is 5151227. The next prime is 5151253. The reversal of 5151231 is 1321515.

It is not a de Polignac number, because 5151231 - 2² = 5151227 is a prime.

It is a super-2 number, since 2×5151231² = 53070361630722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5151031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47205 + ... + 47313.

It is an arithmetic number, because the mean of its divisors is an integer number (321750).

Almost surely, 2^5151231 is an apocalyptic number.

5151231 is a deficient number, since it is larger than the sum of its proper divisors (2570769).

5151231 is a wasteful number, since it uses less digits than its factorization.

5151231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 260 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 5151231 is about 2269.6323490821. The cubic root of 5151231 is about 172.7045085504.

Adding to 5151231 its reverse (1321515), we get a palindrome (6472746).

The spelling of 5151231 in words is "five million, one hundred fifty-one thousand, two hundred thirty-one".