51030331 has 4 divisors (see below), whose sum is σ = 55669464. Its totient is φ = 46391200.

The previous prime is 51030323. The next prime is 51030337. The reversal of 51030331 is 13303015.

51030331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51030331 - 2³ = 51030323 is a prime.

It is a super-2 number, since 2×51030331² = 5208189363939122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51030337) 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 3 ways as a sum of consecutive naturals, for example, 2319550 + ... + 2319571.

It is an arithmetic number, because the mean of its divisors is an integer number (13917366).

Almost surely, 2^51030331 is an apocalyptic number.

51030331 is a deficient number, since it is larger than the sum of its proper divisors (4639133).

51030331 is a wasteful number, since it uses less digits than its factorization.

51030331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4639132.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 51030331 is about 7143.5517076592. The cubic root of 51030331 is about 370.9164789478.

Adding to 51030331 its reverse (13303015), we get a palindrome (64333346).

The spelling of 51030331 in words is "fifty-one million, thirty thousand, three hundred thirty-one".