51030243 has 48 divisors (see below), whose sum is σ = 88373376. Its totient is φ = 29082240.

The previous prime is 51030233. The next prime is 51030263. The reversal of 51030243 is 34203015.

It is not a de Polignac number, because 51030243 - 2⁵ = 51030211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51030223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44880 + ... + 46002.

It is an arithmetic number, because the mean of its divisors is an integer number (1841112).

Almost surely, 2^51030243 is an apocalyptic number.

51030243 is a deficient number, since it is larger than the sum of its proper divisors (37343133).

51030243 is a wasteful number, since it uses less digits than its factorization.

51030243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166 (or 1154 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 51030243 is about 7143.5455482554. The cubic root of 51030243 is about 370.9162657369.

Adding to 51030243 its reverse (34203015), we get a palindrome (85233258).

The spelling of 51030243 in words is "fifty-one million, thirty thousand, two hundred forty-three".